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Black Screen During Installation - What Is It?

Many are upgrading their OS to Windows 10, however, it’s not always smooth sailing because users have been reportedly experiencing different bugs including Black Screen after a successful update.

One common issue in installing Windows 10 is the appearance of a black screen after installation. This usually occurs when the user restarts the computer. Initially, there will be a black screen only appearing on the monitor. There are also cases where a mouse cursor is present, while some cases have no cursor at all.

Not only that, it seemed that you’ve lost all your desktop icons when experiencing this bug.

Solution

Error Causes

Just like the other bugs experienced by Windows 10 users, booting to a black screen has reasons. Before you even try to look for the solution, you first have to determine the cause of the error, in this case, the error would be black screen when booting.

• Error on external devices such as printer or mouse.
• Having outdated display/video drivers that normally result in black screen when OS is updated.

If error messages are left unsolved, you may encounter other Windows 10 related issues such as error code 0xc0000142. 

Further Information and Manual Repair

Before you even think of upgrading your OS to Windows 10, you need to know that there are specific system requirements and specifications to be able to successfully update your operating system.

• Minimum of 1 gigahertz (GHz) Processor
• Either 1 (GB) (32-bit) or 2 GB (64-bit) Ram
• You need at least 16 GB of free hard disk space
• A Microsoft DirectX 9 graphics device or later with WDDM 1.0 driver graphics card
• 800 x 600 display
• A Microsoft account and Internet access.

There are more system requirements in order to use other certain Windows 10 features, but we’ll focus on solving your black screen problem in this article.

IMPORTANT NOTE: While it’s possible that you’ll be able to find the solution for your black screen during Windows 10 update, contacting the service of a professional technician or using an automated tool is advisable if you’re not confident in performing the methods to be discussed.

Method 1: Windows 10 DVD Boot

1. Hit Repair your computer at the Install Now screen.
2. Press Advanced Options
3. When you’re in the Advanced Options find Troubleshoot and click it.
4. Proceed to pressing Startup Repair
5. Simply follow the instructions of the screen and check if that helps solve the black screen problem.

Method 2: Safe Mode from Windows 10 DVD Boot

1. Go to Install Now screen
2. Hit Repair your computer button
3. Go to Advanced Options
4. Click Safe Mode option

There’s a chance that you’ll get an error prompt saying, “installation cannot be completed in safe mode.” If this happens, simply press Shift + F10. This command will redirect you to the Command Prompt. You just open Device Manager by keying in devmgmt.msc then disable the display adapters, now check if you’ll be able to successfully boot in normal mode.

This process will normally allow you to complete the Windows 10 installation, if that’s the case you can just update the display adapter drivers from the manufacturer’s website. Restart your computer and see if this solves the problem.

Method 3: Driver Roll Back

1. Hit Windows Key + X then press the Device Manager
2. Expand the Display Adapters option
3. Right-click the listed Display Adapter and press on properties
4. Find the Driver Tab and click on it, then press Roll Back Driver

Do take note, however, that the Roll Back Driver option is not available if there was no previous version installed.

Method 4: Check External Devices

Since one common cause of black screen during a Windows 10 update is the external devices you use in your computer, you might want to consider these steps as well.

1. Simply unplug all of the external devices you currently use
2. Restart your computer
3. If in case this solved your black screen problem, carefully plug back the devices one at a time to determine which of the device is the culprit.
4. Update the drivers for the outdated hardware using a reliable third party tool.

Method 5: Fast Startup Disabled

Some Windows 10 users had success in solving their black screen problem by disabling the fast startup.

1. Go to the Control Panel, find Power Options and press “Choose what the power button does,” which is located in the left pane of the panel.
2. Hit the “Change settings that are currently unavailable.”
3. Make sure to unmark the checkbox button saying, “Turn on fast startup.”

Recently, a lot of users experience issues after the Windows 10 v1903 upgrade and one of them is that the Cortana Web Preview is not functioning like it’s supposed to. Even though Microsoft has already replaced the unified search where you no longer have to use Cortana, it is still undeniably useful and is packed with some great features, one of which is the Web view. Each time you type a search query, it will open a web view where you can see the results using Bing. However, some users reported experiencing some issue wherein the web view does not show anything and appears to be broken and users have to click on the Open in Browser link. Thus, if you are one of the users who experience the same problem, then this post is for you – it will guide you on what you can do if the web preview in Cortana is not working on your Windows 10 device. To fix the Web Preview issue in Cortana, you can try to restart Cortana or reset it using the Windows Settings app or change the Search filter level. You could also try to run the Windows Store App troubleshooter or re-register or reinstall Cortana. For more details refer to the options provided below.

Option 1 – Try to restart the process of Cortana

There are times when the running process of Cortana might encounter an error and breaks a particular component of the whole service so the first thing you can do is to restart Cortana’s process in the Task Manager.

• Tap the Ctrl + Shift + Esc keys to open the Task Manager.
• Next, go to the Processes tab and look for Cortana’s entry.
• Once you find it, right-click on it and select the End task option.
• Afterward, open Cortana again and see if it fixes the web view problem or not.

Option 2 – Try changing the search filter level

The next thing you can do to fix the Web View is to change the search filter level. All you have to do is go to Settings > Search and change filter level and from there, modify the search filter level and then see if it fixes the problem.

Option 3 – Run the Windows Store App troubleshooter

The Windows 10 Store Apps Troubleshooter will help you in fixing the Web Preview problem in Cortana. This is a great built-in tool from Microsoft that helps users fix any app issues. To use the Windows Store Apps Troubleshooter, follow the steps below.

• Tap Win + I keys again to open the Windows Settings panel.
• Go to Update & Security and then go to Troubleshoot.
• Under the Troubleshoot section, on your left-hand side, scroll down to find Window Store Apps.
• Then click on the Run the troubleshooter option and follow the on-screen instructions and then see if it fixes the problem.

Option 4 – Try to reset Cortana via Settings

• Launch the Windows 10 Settings app and go to Apps > Apps & Features.
• Next, look for the entry of Cortana on the right-side panel and select it.
• After that, select the Advanced options and then select the Terminate button under the Terminate section.
• Once done, click on the Reset button under the Reset section.
• Restart your PC.
• After your computer boots, launch Cortana again and check.

Option 5 – Try to re-register and reinstall Cortana

If none of the options given above works, you must consider reinstalling Cortana.

• First, right-click on the Start button and click on the Windows Powershell (Admin) option from the list.
• Next, type the following command and hit Enter to execute it:

Set-ExecutionPolicy Unrestricted

• After that, execute this second command to reinstall Cortana:

Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)AppXManifest.xml"}

• Restart your computer and check if the Web Preview in Cortana is now working.

What is Windows 10X

Windows 10X is a new version of Windows that has been built from the ground up for new PCs and will begin shipping on hardware in 2021. It's built on top of a new modern version of Windows called 'Windows Core OS' that guts legacy components and features in favor of contemporary user experiences and enhanced security. This means everything from the Windows Shell to the underlying OS has been rebuilt with modern technologies.

As a result, Windows 10X does not support legacy Win32 applications at launch. Windows 10X PCs in 2021 will be able to run Microsoft Edge, UWP, and web apps. Legacy Win32 application support will arrive at a later date, however. When it does, Win32 applications will run in a secure container by default, meaning those legacy applications cannot affect system performance and battery life when closed. Windows 10X is a much more secure and stable OS as a result of this, as there's no opportunity for legacy apps to cause bitrot.

Windows 10X features a new shell of the user interface that has been built with modern technologies. It's an adaptive user experience that can adjust depending on the "posture" of your device. For example, with a foldable PC, the user might want to use it in several different ways; as a laptop, or tablet, or in tent mode for movies. Because of this, the user interface must adapt to provide the best experience no matter which way your device is being used. This also means that legacy shell elements, such as the Control Panel, File Explorer, and error dialogs and icons are gone on Windows 10X. As Microsoft has rebuilt the entire shell, it doesn't include any of the legacy things that make Windows 10 so inconsistent when it comes to UI. The Windows Shell on Windows 10X should be much more consistent. At launch, Windows 10X will only be available on traditional clamshell PCs aimed primarily at the education and enterprise markets. The platform will eventually ship on the new devices from factors such as foldable PCs, but that won't be happening in 2021.

Start menu

Microsoft is redesigning the Start menu experience on Windows 10X with a focus on productivity. It features a system-wide search bar along the top that can also search the web and a grid of installed apps below that in place of live tiles. It also has a "recent activities" area that dynamically updates with things the user might want to jump straight into, such as recent Office documents and visited websites. The apps list can be customized, with the ability for users to rearrange which apps show up in the first few rows.

Taskbar

Windows 10X also has a new adaptive Taskbar that features a centered design. The Start and Task View buttons appear in the center, with running and pinned apps appearing between the two. When you open an app, the Start and Task View buttons gently spread apart, giving the Taskbar a much more fluid appearance. There are some new animations; the Start and Task View buttons have their own animations when clicked on, and there's a subtle bounce to app icons when you minimize running apps to the Taskbar. In addition to the new design, there are also up to three different Taskbar sizes: Small, medium, and large. Large is great for tablets, while medium and small mimic the usual sizes we already have today on Windows 10. On tablets, users can now swipe up anywhere on the Taskbar to access the Start menu, making it easier for touch users to access their apps list. You no longer have to hit the specific Start button to access your Start menu.

Action center

In addition to the new Start and Taskbar experiences, there's also a new Action Center to compliment them. This new Action Center puts more emphasis on quick actions, with the ability to jump into specific quick actions for further control without leaving the Action Center at all. It's also designed in such a way that mimics a control center, with notifications housed above it in a separate box. This new Action Center includes things like volume controls, power options, and battery percentage. There's also a new music control UI that appears in the Action Center when music is playing from a supported app.

State separation feature

Unlike Windows 10, Windows 10X features something called "state separation" which is how the OS lays itself out on a drive. Windows 10 today installs everything into a single partition, which means the user can access system files, as can apps and potential attackers. On Windows 10X, everything goes into its own read-only partition. So OS files are locked away, as are app files, as are drivers, and the registry. The only thing the user and applications can access is the user partition. This means that malware or viruses can't get in and affect the system because those programs are only able to operate in a single partition, and that assumes they're able to get outside of the app container system Microsoft has built. All apps on Windows 10X run in a container and need explicit permissions to access things that are outside that container. This is already how UWP apps work on Windows 10, and Microsoft will be extending that to Win32 apps on Windows 10X when support for Win32 apps arrives.

Launch date and info

Windows 10X will launch this spring first for commercial markets. Commercial markets include education and enterprise industries looking for sub-$600 PCs for students in the classroom or first-line workers. Windows 10X won't be launching on consumer PCs in 2021, meaning you won't find it on a flagship Dell or HP device. It's also only for clamshell PCs, with foldable, tablets, and other form factor support coming in 2022 and beyond. Windows 10X will launch without an in-box Mail and Calendar app. It's been removed from the first version of Windows 10X because the platform is aimed at commercial markets that will likely use Outlook Web or stream Outlook via Windows Virtual Desktop. Users can opt to reinstall the Mail and Calendar apps from the Microsoft Store if they wish. Windows 10X for mainstream markets won't happen until 2022 when Win32 app support among other features comes to the OS as part of the Windows 10 "Nickel" release scheduled for the first half of 2022. Because Windows 10X is a new operating system, it will not be released as an update for existing Windows 10 PCs. Users won't be able to install Windows 10X on a device that didn't come with Windows 10X, to begin with. There won't be any official ISO media and you won't be able to buy Windows 10X on its own to install on your existing device. It's for new PCs only. If you would like to read more helpful articles and tips about various software and hardware visit errortools.com daily.

If you got the FAULTY_HARDWARE_CORRUPTED_PAGE Blue Screen error on your Windows 10 computer then it is most likely caused by various factors. It could be caused by an incomplete installation or uninstallation of some applications or program, or it could also be caused by some exploit that intervenes with the normal functioning of the computer, as well as bad sectors on the hard disk, damaged system files, malfunctioned system drivers, modified Windows Registry files, or a Blue Screen occurrence during a Windows Update and many more. Getting this bug check means that a single-bit error was found on this page. It also indicates that this is a hardware memory error and to resolve it, you need to follow the suggestions laid out below but before that, it is recommended for you to create a System Restore Point first so that if anything goes wrong, you can always go back to the previous state.

Option 1 – Run a Memory Check to test RAM

Since the problem might have something to do with hardware memory, you need to test RAM by running a Memory Check using the Windows Memory Diagnostic. Refer to these steps to do so.

• Tap the Win + R keys to open the Run dialog box.
• Then type “mdsched.exe” in the field and hit Enter to open the Windows Memory Diagnostic.
• After that, the Windows Memory Diagnostic will give out two options such as:

1. Restart now and check for problems (recommended)
2. Check for problems the next time I start my computer

• Select any of the given options. After that, your computer will restart and check for memory-based issues upon the restart. If there are any issues, it will automatically them.

Option 2 – Run the System File Checker

System File Checker or SFC is a built-in command utility that helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files with good system files that might be the cause why you’re getting the FAULTY_HARDWARE_CORRUPTED_PAGE Blue Screen error. To run the SFC command, follow the steps given below.

• Tap Win + R to launch Run.
• Type in cmd in the field and tap Enter.
• After opening Command Prompt, type in sfc /scannow

The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:

1. Windows Resource Protection did not find any integrity violations.
2. Windows Resource Protection found corrupt files and successfully repaired them.
3. Windows Resource Protection found corrupt files but was unable to fix some of them.

Option 3 – Check for conflicting or incompatible programs by putting your PC in a Clean Boot state

As mentioned, the FAULTY_HARDWARE_CORRUPTED_PAGE Blue Screen error might be caused by some problematic programs that clash with your existing operating system. Several users reported that numerous programs that are supposedly designed to enhance computer performance are causing conflict in the system instead. To identify which program is causing the problem, you need to put your computer in a Clean Boot State. To do so, follow the steps below.

• Log onto your PC as an administrator.
• Type in MSConfig in the Start Search to open the System Configuration utility.
• From there, go to the General tab and click “Selective startup”.
• Clear the “Load Startup items” checkbox and make sure that the “Load System Services” and “Use Original boot configuration” options are checked.
• Next, click the Services tab and select the “Hide All Microsoft Services” checkbox.
• Click Disable all.
• Click on Apply/OK and restart your PC. (This will put your PC into a Clean Boot State. And configure Windows to use the usual startup, just simply undo the changes.)
• From there, start to isolate the problem by checking which one of the programs you installed recently is the root cause of the problem.

Option 4 – Update or rollback drivers

If the first few options didn’t work for you, then it’s time to either update or roll back the device drivers. It is most likely that after you updated your Windows computer that your driver also needs a refresh. On the other hand, if you have just updated your device drivers then you need to roll back the drivers to their previous versions. Whichever applies to you, refer to the steps below.

• Open the Devices Manager from the Win X Menu.
• Then locate the device drivers and right-click on them to open the Properties.
• After that, switch to the Driver tab and click on the Uninstall Device button.
• Follow the screen option to completely uninstall it.
• Finally, restart your computer. It will just reinstall the device drivers automatically.

Note: You can install a dedicated driver on your computer in case you have it or you could also look for it directly from the website of the manufacturer.

If the display of your Windows 10 computer turns on all of a sudden no matter how put it to sleep over and over again, it always wakes up, read on as this post will guide you in resolving this peculiar issue. In case you don’t know, the Windows 10 computer Sleep state is made in such a way that if it’s really important, it wakes up. You may have configured this kind of behavior or there could be some hardware component that’s interrupting its Sleep state. Thus, this post will give you some troubleshooting tips to fix the Sleep state issue caused by the Legacy Kernel Caller. The Legacy Kernel Caller points to the external hardware that’s causing your Windows 10 to wake up even when it’s in a Sleep state. Step 1: Find out what’s keeping your computer from going to sleep. To figure out what really is keeping your computer from going to sleep, you can execute the “powercfg –requests” command instead of checking the power configuration of your computer. This command will look for requests from applications and drivers that prevent the computer from turning off the display or from going to sleep. To execute the command, simply open Command Prompt and type “powercfg –requests” and hit Enter. After that, you will see part of the result that looks like this:

“SYSTEM [DRIVER] USB AUDIO DEVICE An audio stream is currently in use [DRIVER] Legacy Kernel Caller.”

Step 2: The next thing you have to do is remove all the external hardware connected to your computer. In this step, you have to disconnect external hardware from your computer. Based on reports from users who experienced the same issue, the “TV card” is the culprit so make sure you remove that one. Once you’ve removed it, open Command Prompt and run the “powercfg –requests” command again and you’ll see that the “Legacy Kernel Caller” will no longer be on the list. In addition, your computer will get into its regular sleep mode once the hardware is removed. Once you do that, the driver gets hung and won’t release the power request despite being used. Step 3: Try using the request override option The powercfg command also offers a request override option which allows users to disable the requests from applications and services to wake the computer from sleep mode. To run this command, simply open Command Prompt with admin privileges. After you open Command Prompt, type the following command and hit Enter to disable requests from applications and services that causes the computer to wake from sleep state.

Powercfg -requestsoverride Driver "Legacy Kernel Caller" System

Step 4: Check the streaming and media applications You also have to check if your computer is running an audio or video service in the background. In such cases, your computer won’t be able to go to sleep mode if these services are running in the background. You might have noticed that when you play a video or audio, your computer never goes to sleep. And if you have put it to sleep in between watching the video, then it’s probably why your computer is waking up. Thus, you have to stop these services. Step 5: Check the devices that can wake your computer If you didn’t see the Legacy Kernel Caller in the result after you execute the ”powercfg –requests” command, then you can try to execute the following command instead.

powercfg –devicequery wake_armed

After you enter this command, it will give you a list of all the devices that can wake your computer. So if there is anything other than the mouse, keyboard, touchpad, you have to check the power configuration of that device. To do that, go to the Device Manager and disable the device’s “Allow this device to wake the computer” option in its Properties Step 6: Check the Sleep Advanced Settings

• Click on the Windows key and type “control panel” in the field and select the related search result.
• Next, select the Security and Maintenance option and click on the Power Options.
• After that, you have to select the Change Plan Settings but keep in mind that this option is barely readable so you need to read each option carefully.
• Now click on the Change advanced power settings button and a new window will appear.
• Then look for the “Sleep” option and expand it. Make sure that the “Allow hybrid sleep” option is on.
• Reboot your computer and check if your computer now functions properly. If it still didn’t work, you may have to reverse the changes you’ve made.

On the other hand, you could also run the Power Troubleshooter to resolve the Sleep state issue. This built-in troubleshooter will automatically fix any power-related issues in your computer.

USB ports, just like any other ports, also comes with a power rating. The default power output of a standard USB port is 0.5 amperes and if you notice, mobile phones charge slowly on USB ports which explains why. There are times when Windows may throw an error or warning that says, “Power surge on the USB port”. This kind of error occurs when a connected device tried to draw more power and the error comes as a part of that notification so when you select it, it will say,

“A USB device has malfunctioned and exceeded the power limits of its hub port. You should disconnect the device”.

To easily fix the problem, you can try to disconnect the device and click on Reset and if you click on Close, the port will not work until you unplug it and then restart your computer. On the other hand, if disconnecting the device did not resolve the problem, you can try running the Hardware & USB troubleshooter or use a USB hub. You can also try to reinstall, uninstall or roll back the USB drivers or run the OEM diagnostics. For more information, refer to each one of the potential fixes provided below.

Option 1 – Try to run the Hardware & USB troubleshooter

• The first thing you need to do is click on Start and then on the gear-like icon to pull up the window for Settings.
• After opening Settings, look for the Update and Security option and select it.
• From there, go to the Troubleshoot option located on the left-hand side of the list.
• Next, select Hardware and Devices from the list and open the Troubleshooter and run it. Once it is doing its job, wait for it to complete the process and then restart the system.
• After the system restarts, check if the problem’s now fixed. If not, refer to the next option given below.

Note: You could also try to run the USB troubleshooter as it could also resolve the problem.

Option 2 – Try to use a USB hub

If you’ve encountered the error on a specific device, then it is possible that the device requires more voltage. To fix this error, you can try to use the same device on another computer and if you still got the same error, you might want to use a USB hub that comes with its power source. USB hubs come with high-speed charging ports that should be able to supply the power needed for the device.

Option 3 – Update, rollback or reinstall the Universal Serial Bus Controller driver

If updating the drivers of the device did not fix the “The device is not ready” error, you can try to update, rollback, or reinstall the Universal Serial Bus Controller drivers instead of using the Device Manager. Refer to the following steps:

• First, click the Start button and type “device manager”.
• Then click on the “Device Manager” from the search results to open it.
• From there, look for the “Universal Serial Bus controllers” option and then right-click on each one of the USB drivers and select the Update Driver from the menu.

Note: If it is a regular USB drive, then it will be listed as a USB Mass Storage Device but if you have a USB 3.0 device, then look for a USB 3.0 Extensible Host Controller.

• Restart your PC and then click the “Search automatically for updated driver software” option.

Note: If updating the USB Controller drivers didn’t work, you can try to reinstall them instead.

Option 4 – Try running OEM Diagnostics if you have any

If the laptop or desktop computer you are using is a branded one, OEMs usually include software to diagnose issues in the computer like the USB port error. So if you have this software, try to run it for diagnosis and use any given suggestions to fix the error.

AMD and ATI Technologies ULC have filed a complaint in the United States International Trade Commission against Realtek Semiconductor and TCL Industries Holdings claiming that they have violated five patents.

The complaint has automatically triggered an investigation from USITC which has responded that they will look into certain graphics systems, components thereof, and digital televisions with components from Taiwan-based Realtek and the China/Hong Kong-based TCL Industries Holdings (and its subsidiaries).

AMD and ATI are seeking an exclusion order and cease and desist orders for the sale of the products. The investigation officially started on July the first. AMD and ATI claim that Mediatek and TLC Industries violated five patents on various technologies used in graphic cards.

The ATI patents include texture decompression techniques, a graphics processing architecture with a unified shader, and a multi-threaded graphics processing system (patents 7,742,053 claims 1-9, 8,760,454 claims 2-11, and 11,184,628 claims 7-12). The AMD patents cover a method and system for synchronizing thread wavefront data and events. A patent covers a processing unit that enables asynchronous task dispatch (patents 8,468,547 claims 16-21, and 8,854,381 claims 15-20).

This is not the first time AMD and ATI have asked for a USITC investigation, in 2017 they were targeting LG, Vizio, Mediatek, and Sigma Designs. The previous investigation has been concluded with the settlement between parties, how this one will go we shall see and keep you updated as we move along.

Error Code 0x80073afc - What is it?

Error code 0x80073afc deals with an antivirus program first built into Windows 8/8.1 This error occurs when Windows Defender, the built-in anti-virus software in Windows 8/8.1 and higher, does not start automatically and users attempt to manually start the program. During the initialization period of the program start-up, something goes wrong and users get a 0x80073afc Error message. The error message states there was a problem with the initialization of the program. Windows Defender provides protection of your computer and it is advised by the Microsoft Corporation that you ensure it starts up automatically on every start-up.

Solution

Further Information and Manual Repair

Users have found several manual repairs that have fixed the problem without needing to contact technicians for extra help. While the methods below should solve your problem easily, if this is the first time you have encountered the issue you may want to do a simple restart. This has fixed the problem for some users and is the easiest first troubleshooting move. If it doesn’t work move on to the methods listed below, which are easily completed without extra help.

Before trying any of these methods, please make sure that you are logged into a profile that is listed as the administrator of the computer of his administrative powers enabled. If this is not the case you will not be able to complete the following methods. Please log out and log back in on the administrator profile.

Method 1:

First, check to see if you have a third-party anti-virus program installed on your computer. Some users believe that the built-in Windows Defender program is not powerful enough to handle the safety of their computer so they usually download a third-party program. However, that program may have caused a conflict with Windows Defender and may not allow it to open. If you do have a third-party program installed, try uninstalling it then manually starting Windows Defender.

Method 2:

If method one does not work, you may be infected by malware or a virus that has tampered with the settings on your computer and will not allow Windows Defender to start automatically or manually.

First, open Run by holding the “Win” key and pressing the “R” key. Then type “Regedit”. The program will ask for permission to follow through with this action. Click on “Yes” and the Open Registry Editor will open.

Find the HKEY_LOCAL_MACHINESoftwareMicrosoftWindows NTCurrentVersionImage File Execution Option and check to see if there are any files similar to MSASCui.exe or MpCmdRun.exe. If there are any file entries that resemble that, you will want to right-click on them before selecting the “Delete” option. If you do not see any entries that match, this is not the issue with your Windows Defender and you will want to try another method.

The Registry on your computer is very important. It helps tell your computer what programs are safe to run, what programs should be run, and what programs should not be run. If it is tampered with by a virus or Malware, multiple system operations can be affected.

However, if you did find similar file names, and you deleted them, try to start Windows Defender manually. If it does not work again, move on to the next method. 

Method 3:

If the first two methods do not work for your issue, and you are still receiving error code 0x80073afc when attempting to start Windows Defender, this step should solve the problem if you have Restore Point installed on your computer, which you most likely do.

For this method, we will be restoring your computer to a previous Restore Point. First, just like in method two, hold the “Win” key and press the “R” key. This will open run. Next type “Rstrui.exe” and click “ok”. After some time, you will see System Restore Windows. Click “Next” and select the restore point that you would like to go back to. After your computer has restored to the point you selected, check to ensure that Windows Defender has started correctly.

If the above methods aren't able to rectify the issue, you might have to download and install a powerful automated tool to get the job done.

What is QTCF.dll Error?

Sometimes you may experience QTCF.dll error on your computer either during installation or while upgrading applications like iTunes and QuickTime. This error indicates that the installation or the upgrading of the desired application was unsuccessful. The QTCF.dll error is recognized by the Apple Support Community and they have provided a solution to fix this error easily.

Solution

Error Causes

QTCF.dll error occurs because the computer overloads with too much data which corrupts and damages registry files. And therefore the desired program fails to download and start on your PC. When this happens you see a pop up on your screen and the QTCF.dll error message that is usually displayed as:

• QTCF.dll not found
• QTCF.dll file is missing

Such message display hinders your ability to use iTunes or QuickTime applications on your PC. Furthermore, it also slows the performance of your system and you may encounter startup and shutdown problems. Therefore, it is advisable to repair the problem and fix the QTCF.dll error right away.

Further Information and Manual Repair

The good news is that you don’t need to go to a professional or be an IT expert in order to fix the QTCF.dll error. Since this error means that the installation or the attempt to upgrade the system was unsuccessful therefore you need to reinstall the fresh copy of the application. Here’s how you can easily fix the problem by yourself and install a fresh copy of the application: Step 1: First close all the applications running on your computer. Step 2: Now uninstall the application that you were trying to install such as iTunes or QuickTime.  To do this, go to the start menu, click on settings, control panel, and programs. Now click on the application you want to remove. Step 3: Once the application is uninstalled and removed from your computer, then restart it again. Step 4: Now download a fresh version of the application (iTunes or QuickTime) from Apple’s official website http://www.apple.com/quicktime/download/. Step 5: Run the installer. If reinstalling doesn’t work, then it is advisable to download the QTCF.dll repair tool. This repair tool will scan your PC for errors in seconds. Once the scanning is complete, click on the ‘fix all’ button to repair your computer. Once the error is fixed, restart your computer and then try reinstalling the desired application one more time.

A Word of Advice

For regular PC users, it is advisable to install an anti-virus and malware scanner and run it every time you use your computer. This helps you keep informed about the viruses or errors that your computer might be exposed to. And you can take timely actions before you experience file corruption and damage.

Hello everyone, I hope you are all doing well. Today we will be changing the Windows Lock Screen background. Changing the lock screen background is a very easy task and it can be done in a very short time. So let's jump right into it. The first thing you need to do is to press the Windows start button on the bottom left and then press settings. Once the settings screen appears, choose and click on Personalization. Inside personalization, click on the Lock Screen tab. On the right screen, under the picture, you will find Windows spotlight, click on it to bring a drop-down menu up. Your choice is presented as a single picture for background or slideshow, a series of pictures that are going to be looped in a given time interval. If you would like just a single picture for your background, choose that and click on it. Once you are in choose picture dialog, click on the browse button and navigate to the picture on your storage which you would like to have as a background. If however, you fancy slideshow as your lock screen background, click on the background drop-down menu and choose the slideshow. Next, click on add a folder and navigate to a folder where you have pictures that you would like to have as a slideshow for your Windows lock screen.