Disabling the Blur on Login Screen in Windows

In today's age of smart gadgets and complete replacement of even some simple things with their smart counterpart, it is not really a surprise to see some strange innovations that try to take advantage of modern technology.

One of these innovations is a smart book, or to be more precise smart note, a reusable notebook that could be connected to your phone.

Why Rocketbook Fusion smartbook

One thing that could justify, well it should justify buying Rocketbook is the preservation of trees and the environment since it can be reused. The second argument would be its price since it is not expensive considering what it offers.

On top of all, you also have a free application for your phone in order to take full advantage of it.

What is a smartbook?

Imagine this scenario, you have a notebook of 42 pages with several different page styles inside. You write in it and after it is filled you upload its content to your email or cloud service of your choice, get a cloth, erase everything and start again from zero.

So as mentioned notebook comes with 42 pages of various page styles. Most of the pages are either lined or dotted but the notebook also includes a monthly calendar, two-week detailed calendar pages, and three pages for project or idea tracking. Since everything can be erased this is enough variety to cover all basis and eliminate any need for another workbook ever.

When you feel like you want to save work or once it is filled you can easily upload and save the workbook from the scan page option in the free Rocketbook app. Once scanned pages can be uploaded to your preferred cloud service or sent to your email.

Now in order to write and be able to erase any of Rocketbook's notebooks, you will have to use Pilot's Frixion writing pens. They will dry around 15s on the page and can be of course easily wiped with a damp microfiber cloth that is included with the purchase. One pen also comes with a workbook when purchased.

Application

Application has cool features, of course, the most important and most useful one is setting your upload scan destination so when you scan your pages they get automatically uploaded to your chosen destination.

In the application settings, you can also toggle some handwriting recognition features that will allow you to easily search your uploaded documents. For example, you can search through documents just by writing now or two words. There is also a Smart List feature as well that will take your checklist and make it into a virtual checklist.

The app also has a fun Explore section where you can find all sorts of fun hacks and different ideas on how to use your Rocketbook.

Error Code 0x80070017- What is it?

Error Code 0x80070017 is an error code that is most often associated with Windows 10 installations, although it has also been encountered by users on previous versions of the Windows operating systems. It is usually encountered as users attempt to install a new version of the software on their machine.

Common symptoms include:

• A vague error message regarding the inability of the system to copy over the necessary files pops up as users attempt to install a new version of the Windows operating system on their computer

While it can be hard to tell what the exact cause of Error Code 0x80070017 is on your specific device, the good news is that there are two primary methods that can be used to fix the problem and to allow you to proceed with your installation. These two methods do require some degree of technical knowledge and/or skill, so if you don’t feel like you have the ability to undertake them on your own, be sure to get in touch with a trusted computer repair professional to assist you.

Solution

Error Causes

The most basic cause of Error Code 0x80070017 is that some of the files that are needed by the system to complete the installation are either not being found by the computer or are believed to be corrupted by the system. When this happens, security features within the software prevent it from completing the installation process, so as to avoid damage to the computer. Error Code 0x80070017 can be disruptive to your installation process, but there are two basic methods that can be employed to resolve it.

Further Information and Manual Repair

While it can be frustrating to encounter Error Code 0x80070017 on your Windows machine, there are two methods that can be used to try to resolve the problem. One of these methods is extremely simple, even for the most basic users, while the second method takes a little bit more skill and technical knowledge. If you aren’t able to complete these methods on your own, be sure to get in touch with a qualified computer repair technician that can assist you. Here are the best ways to attempt to resolve Error Code 0x80070017 on your device:

Method One:  Clean Your Physical Disk

If you purchased a physical disk version of the installation files for your Windows operating system, remove the disk from your drive and clean it using a microfiber or other lint-free cleaning cloth. As you wipe down the disk, do not use any chemicals, and be sure to wipe gently from the center towards the outside edge rather than the other direction, as failure to do so can damage the disk irreparably.

In some cases, you may need to contact Windows support if you believe that there is an error on the disk itself, such as a scratch, that would prevent the disk from being used as needed in the installation process. They may be able to offer you a replacement disk or you may be able to download a digital copy of the version that you are attempting to install on your machine.

Method Two:  Use the Chkdsk Utility

To determine if there may be an error within the disk drive itself, place the installation disk into the drive and restart the system. Go through the prompts until you see the option to “repair your computer.” Choose the operating system that you are using, go into the menu for System Recovery, and type in the words “Chkdsk/r” to begin to use the tool.

Whenever you run a tool like Chkdsk on your computer, it is important to restart your machine afterward to ensure that any changes that have been made are able to be fully applied and accepted by the operating system that you are running.

Method Three: Use An Automated Tool

If you wish to always have at your disposal a utility tool to fix these Windows 10 and other related issues when they do arise, download and install a powerful automated tool.

In case you don’t know, when you visit a website that uses HTTPS, it also offers an SSL certificate to the browser in order to verify the website’s identity. Although it may contain lots of things inside it, one of them is the URL of the website. So if the certificate does not match the URL to what you entered, you will most likely get the “Server’s certificate does not match, ERR CERT COMMON NAME INVALID” error which indicates that the connection is not private and the site may try to steal your data but worry not, as this post will guide you in resolving this issue. To fix the ERR_CERT_COMMON_NAME_INVALID error, here are some suggestions that might help.

Option 1 – Check the website’s certificate

If you own the website where you’re getting the error, then you might have to check if the website’s certificate is installed properly and configured on the server as it could be the reason why you’re suddenly getting the error.

Option 2 – Check the Windows Host file

You can also try to cross-check the Windows Hosts file to find out if the website you are trying to open has been blocked, because if it is, then it’s no wonder why you’re getting the ERR_CERT_COMMON_NAME_INVALID error. There are instances when some third-party application modifies the file and adds some websites to the blocklists. So if the website is indeed blocked, you need to remove it from the list.

Option 3 – Use the Google Public DNS

You might want to change your DNS to Google Public DNS as it could also help you in fixing the ERR_CERT_COMMON_NAME_INVALID error in Chrome. To do so, follow the steps below.

• The first thing you have to do is right-click on the network icon in the Taskbar and select Network and Sharing Center.
• Next, click on the “Change Adapter Settings” option.
• After that, search for the network connection that you are using to connect to the internet. Note that the option might be “Wireless Connection” or “Local Area Connection”.
• Right-click on your network connection and click on Properties.
• Then select the new window to choose the “Internet Protocol 4 (TCP/IPv4)” option.
• After that, click on the Properties button and click the checkbox in the new window for the option “Use the following DNS server addresses”.
• Type in “8.8.8.8” and “8.8.4.4” and click OK and exit.

Option 4 – Run the built-in Malware Scanner and Cleanup Tool in Chrome

In case you don’t know, there is actually a built-in malware scanner and cleanup tool in Chrome that helps you get rid of any unwanted ads, pop-ups, and even malware, as well as unusual startup pages, toolbars, and other things that could affect the performance of the browser. In addition, this built-in tool in Chrome might also help in fixing the ERR_CERT_COMMON_NAME_INVALID error.

Option 5 – Reset Chrome

Resetting Chrome can also help you get rid of the error. Resetting Chrome means restoring its default settings, disabling all the extensions, add-ons, and themes. Aside from that, the content settings will be reset as well and the cookies, cache, and site data will also be deleted. To reset Chrome, here’s what you have to do:

• Open Google Chrome, then tap the Alt + F keys.
• After that, click on Settings.
• Next, scroll down until you see the Advanced option, once you see it, click on it.
• After clicking the Advanced option, go to the “Restore and clean up option and click on the “Restore settings to their original defaults” option to reset Google Chrome.
• Now restart Google Chrome.

If you suddenly encountered an error saying, “The application failed to initialize properly (0xc0000005)” when you are using an application on your Windows 10 computer, read on as this post will provide you some potential fixes that could help you fix the error. You can encounter the “The application failed to initialize properly (0xc0000005)” error on many applications such as VLC, Chrome, Word, and any other executable files and even the operating system files. When you get this kind of error, you will see the following error message:

“The application failed to initialize properly (0xc0000005). Click on OK to close the application.”

This kind of application error can occur due to several reasons which include damaged installation of the application or system files may have gotten corrupted or damaged. It could also be caused by a malware infection. There are a couple of suggestions provided in this post to help you resolve the error. You can try to run both a System File Checker scan and the DISM tool or reinstall the problematic application or repair-install Windows 10 as well as run a malware scan. Note that the options provided below do not have to be followed in sequence.

Option 1 – Try to run a System File Checker scan

As mentioned, the error could be due to corrupted or damaged system files and one of the ways you can fix that is by running a System File Checker or SFC scan on your computer. To do so, follow these steps:

• In the Windows Start Search, type “command prompt” and right-click on Command Prompt from the search results, and then select the “Run as administrator” option.
• After opening Command Prompt with admin privileges, type the “sfc /scannow” and tap Enter to execute it.
• Once the scan is finished, restart your computer and see if the “The application failed to initialize properly (0xc0000005)” error is fixed or not.

Option 2 – Run the DISM tool

You can try running the Deployment Imaging and Servicing Management or DISM tool to fix the application error. Using this built-in tool, you have various options such as the “/ScanHealth”, “/CheckHealth”, and “/RestoreHealth”.

• Open the Command Prompt with admin privileges.
• Then type in the following commands and make sure to hit Enter right after you type each one of them:
  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • exe /Online /Cleanup-image /Restorehealth
• Do not close the window if the process takes a while as it will probably take a few minutes to finish.

Option 3 – Try reinstalling the application

You might also want to uninstall the application and download its latest working version and then install it back again. Note that when you do this, you will lose all your app data.

Option 4 – Try to repair install Windows 10

• First, you have to click this link and then click the Download Tool Now button.
• Next, click the “Use the tool to create installation media (USB flash drive, DVD, or ISO file)…” option and follow the next given instructions on the screen.
• Now select the ISO file option in step 5.
• After that, you should now have an ISO file.
• Next, go to the location where you’ve downloaded the ISO file.
• Then right-click on the Windows 10 ISO file and select the Open with option and then select File Explorer.
• Now click on “setup.exe” and follow the next instructions that appear on the screen. When asked, you have to select either Nothing (clean install) or Keep personal files only option. Take note that you must not select the “Keep personal files, apps, and Windows settings”.

Option 5 – Try scanning your computer using Windows Defender

It is possible that your computer is infected with malware which could be why you’re getting the “The application failed to initialize properly (0xc0000005)” error. Thus, you need to scan your computer using Windows Defender.

• Tap the Win + I keys to open Update & Security.
• Then click on the Windows Security option and open Windows Defender Security Center.
• Next, click on Virus & threat protection > Run a new advanced scan.
• Now make sure that Full Scan is selected from the menu and then click the Scan Now button to get started.

The new Windows 10 update has brought some fixes, improvements, and little things to personalize our computer more. One of these personalization updates we have received is that we can now finally change the color of our START menu and taskbar and it is easy as 1,2,3. In order to change and personalize your START menu and/or title bars all you have to do is click on your windows icon to bring the start menu up and then click on settings. Once you are in setting windows go to personalization settings. When the personalization setting opens go-to color tab on left and scroll down until you find 2 checkboxes under "show accent color on the following surfaces:" check ones you wish to apply the effect to and you are done. Now your START menu and/or title bars are using the color scheme of your choice.

Gaming on the computer has become one of the most used past-time activities among people of all ages. And since we are still in pandemic it has only risen as activity. People can acquire a lot of games at various discounts on various platforms and enjoy them at the leisure of their home. Among many game platforms and stores, Electronic art's Origin is one of the bigger ones, and having some titles that could not be found anywhere else coupled with the ability to have access to almost the whole game catalog with one monthly subscription make it one of the most used clients. Sadly as with every piece of software Origin's client is not perfect by any means and it can behave strangely from time to time. Hello everyone and welcome to errortools.com, today we will fix Origin error code 10 which oddly enough can appear out of nowhere and can even appear on the very end of installation for the chosen game. If you have managed to come by this error you are in luck to be here because we have a couple of fixes for it. I know that you might be excited to play the game so let's go and do some fixing

Check Server status

Before diving into technicality and before we start deleting files and fixing things you should check the Server status. This seems maybe like something you should not do but if the server has experienced some kind of downtime or it is in maintenance Origin will throw this error in the client. Unexpected situations can cause various server issues all of a sudden and the first thing is to check are servers online and working. There are various ways to check server status from official origin website to Electronic arts twitter channel to Reddit and many more online server status websites. If it turns out that the server is to be blamed for this error then sit back and wait for EA to resolve the issue, there is not much you can do anyway.

Delete OriginThinSetupInternal.exe

• After some research, it has come to light that originthinsetupinternal.exe can cause this specific error. The best solution is to delete the file and then run Origin as administrator so the file is remade new.
• First, make sure that Origin is fully closed, check the taskbar and if it lurks there right-click on it and click on quit
• Run file explorer and go into the folder where Origin is installed, by default it is C:\Program Files (x86)\Origin
• Locate OriginThinSetupInternal.exe and delete it
• Then locate origin.exe and right-click on it and then click on Run as administrator

Reinstall Origin client

If the previous solution has not solved the issue then Origin might have some corrupted files inside it. It is known that the Origin client can produce some bad files if the installation has been forcefully canceled. The best thing is to reinstall the completely whole client.

• Press ⊞ WINDOWS + R to open the run dialog
• Inside run dialog type in Control panel and press ENTER
• In the control panel locate programs and features group and double click on it
• Locate Origin, click to select it, and on top click on uninstall
• After uninstall process is completed start file explorer and go to the folder where Origin was installed, by default it is C:\Program Files (x86). Locate the Origin folder and delete it.
• Go to the official origin website and download the new client installation.
• After the download is finished double click on it and follow onscreen instructions.

Disable antivirus

If every solution so far has not been able to remove error then obviously something else is interfering with the origin client and installation functioning. Altho not advisable, turn OFF your security suite including both firewall and antivirus and try installing the game again. There is the possibility that the origin client or some game file has been marked as false positive by security software thus preventing it from executing properly.

Can’t Find Games on Twitch is a common error happening to a vast variety of people. The issue can be traced back to browser issues to others like malware infection. In this guide, we will provide you with common fixes on how to overcome this issue so you can continue watching your favorite streamer.

1. Sign out of Twitch, then sign back in

   If it is a browser issue or some glitch in the Twitch system simply signing out and then signing back in will solve the issue since information about the account will be resent to the twitch platform.

2. Refresh the application

   Sometimes servers are having high traffic and can get overloaded, refresh the application in the upper left corner to reload content.

3. Use browser instead of Twitch application

   If you are still having issues with the application, open the twitch website and access content there.

4. Close twitch

   But in task manager. Sometimes just closing it via the X button is not enough, some glitches stay and the application is still running in the background. Open task manager and close it from there.

5. Scan system for malware

   Scan the entire system for malware, various malware can halt twitch and cause issues.

6. Reinstall application

   If everything else failed, reinstall the application.

One of the common causes of Blue Screen of Death or BSOD errors is system driver files due to varying reasons. So if you encounter a Stop error caused by some system driver files such as isapnp.sys, gv3.sys, storahci.sys, or myfault.sys, on your Windows 10 PC, then this post should help you fix the problem. These system driver files are associated with different error codes. The isapnp.sys file is related to the following error codes:

• SYSTEM SERVICE EXCEPTION
• PAGE FAULT IN A NONPAGED AREA
• KERNEL DATA INPAGE
• SYSTEM THREAD EXCEPTION NOT HANDLED
• IRQL NOT LESS EQUAL
• KMODE EXCEPTION NOT HANDLED.

While the gv3.sys file is related to the following BSOD error codes:

• IRQL NOT LESS EQUAL
• KMODE EXCEPTION NOT HANDLED
• PAGE FAULT IN NONPAGED AREA.

On the other hand, the storahci.sys file is related to these error codes:

• IRQL NOT LESS EQUAL
• KMODE EXCEPTION NOT HANDLED
• PAGE FAULT IN NONPAGED AREA.

And the myfault.sys file is associated with this error code: SYSTEM SERVICE EXCEPTION. Although this system driver file causes different kinds of Blue Screen errors, some of their potential fixes are quite the same so you need not carry out tons of troubleshooting steps. But before you troubleshoot the problem, you might want to check out System Restore first, especially if you create a System Restore point from time to time. To perform System Restore, follow these steps:

• Tap the Win + R keys to open the Run dialog box.
• After that, type in “sysdm.cpl” in the field and tap Enter.
• Next, go to the System Protection tab then click the System Restore button. This will open a new window where you have to select your preferred System Restore point.
• After that, follow the on-screen instructions to finish the process and then restart your computer and check if the problem is fixed or not.

If System Restore didn’t help in fixing the Blue Screen error, now’s the time for you to resort to the troubleshooting tips provided below but before you get started, make sure that you create a System Restore point first and boot your computer into Safe Mode.

Option 1 – Use the System Configuration utility

Note that this first fix is only applicable for Blue Screen errors associated with the myfault.sys file.

• In the Cortana Search box, type “MSConfig” and click on the “System Configuration” entry to open it.
• After opening System Configuration, go to the Processes tab.
• Then scroll down and look for the “Digital Line Detection” process and disable it.
• Now restart your computer and check if the Stop error is fixed or not.

Option 2 – Try to update, rollback or disable related device drivers

Incompatible and outdated drivers can also cause computer malfunctioning or crashing as well as Blue Screen errors. To fix that, you can update, roll back or disable the device drivers in your computer.

• Tap the Win + R keys to launch the Run window and then type in the “devmgmt.msc” command and hit Enter to open the Device Manager window.
• After opening the Device Manager, from the list of device drivers, look for the “WIN ISA Bus Driver” if you are facing a Stop error related to the isapnp.sys file. While you have to look for the Sony Recovery CDs PCG-Z1RAP Series device drivers if you face a Stop error concerning the gv3.sys file. For the storahci.sys, on the other hand, look for any outdated drivers and update them.
• To update or roll back or disable these drivers, just right-click on each one of them, and depending on your preference, you can either select “Update driver”, “Disable device” or “Uninstall device”.
• After that, restart your PC and see if it helped in fixing the Blue Screen error.

Option 3 – Use System File Checker

One of the built-in tools in Windows that you can use to fix Blue Screen errors is the System File Checker. This built-in command utility can help you restore corrupted or missing files as well as replace bad and corrupted system files. Chances are, any of the aforementioned system driver files might be corrupted so to fix them, use System File Checker.

• First, right-click on the Start button and click on the “Command Prompt (Admin) option.
• Next, type in the sfc /scannow command and hit Enter to execute it.

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.

• Now restart your computer.

Option 4 – Run the Blue Screen Troubleshooter

Troubleshooting Blue Screen of Death errors wouldn’t be complete without the Blue Screen troubleshooter. As you know, it is a built-in tool in Windows 10 that helps users in fixing BSOD errors. You can find it in Settings, under the Troubleshooters page. To use it, refer to these steps:

• Tap the Win + I keys to open the Settings panel.
• Then go to Update & Security > Troubleshoot.
• From there, look for the option called “Blue Screen” on your right-hand side and then click the “Run the troubleshooter” button to run the Blue Screen Troubleshooter and then follow the next on-screen options.
• Note that you might have to boot your PC into Safe Mode.

If you receive an error message that says, “Entry point not found, The procedure entry point could not be located in the dynamic link library” on your Windows 10 PC, then you will find this post useful for this will provide you some potential fixes to fix the error. This kind of error can occur if a program fails to locate the DLL library that it needs in order to run. It can also occur if the library is not in the specified directory in the path or if the DLL file has gone missing or has become corrupted. To fix the “The procedure entry point could not be located in the dynamic link library” error, check out the following options given below.

Option 1 – Try to reinstall the program

The first thing you can do to resolve the error is to uninstall the program that throws the error and download its latest version from its official site and then install it again.

Option 2 – Run System File Checker scan

If reinstalling the program didn’t work, you can also try running the System File Checker or SFC scan to fix the error. System File Checker is a command utility built into your computer that helps restore corrupted files and missing files. Refer to the following steps to run it:

• Hit the Win + R keys 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.

 Reboot your computer.

Option 3 – Try checking the details in the Event Viewer

The Event Viewer can also help you resolve the error as it contains detailed information about the error that could help you pinpoint its root cause and resolve it.

Option 4 – Try to re-register the problematic DLL file

You may have to re-register the ntdll.dll file using the regsvr32.exe before you can successfully install the program and fix the error. The Regsvr32 tool is a command-line utility that can be used to register and unregister OLE controls like DLL and ActiveX (OCX) controls in the Windows operating system. Follow the steps below to use it.

• Open Command Prompt as admin from the WinX menu.
• Next, type the following commands in the elevated Command Prompt and hit Enter to execute the command. This will re-register the affected DLL file using the Windows operating system tool, regsvr32.exe.
  • exe /[DLL file]
  • exe [DLL file]

Note: Replace “[DLL file]” with the name of the DLL file that was pointed out in the error.

• After you execute the given commands, you should see a message saying, “DllRegisterServer in vbscript.dll succeeded” if the Regsvr32 tool was able to run successfully. After that, try to install the program again and see if it now works.

Option 5 – Try to replace the DLL file with a trusted source

• First, you need to get the new DLL file from another computer with preferably the same file version number.
• After that, you need to boot your PC into Safe Mode and navigate to the paths listed below and then replace the file using a USB drive or other external storage devices.
  • x86: This PC > C:/Windows/System32
  • x64: This PC > C:/Windows/SysWOW64
• Next, type “cmd” in the Cortana search box and right click on Command Prompt, and select “Run as administrator” to open it with administrator privileges.
• Now type the “regsvr32 ntdll.dll” command and hit Enter.
• Restart your PC and check if the error is now fixed.

Option 6– Try to scan your computer using Windows Defender

It is also possible that the DLL file might be infected with malware or virus which could explain why you’re getting the error. Thus, you have to scan your computer using security programs like Windows Defender.

• Tap the Win + I keys to open Update & Security.
• Then click on the Windows Security option and open Windows Defender Security Center.
• Next, click on Virus & threat protection > Run a new advanced scan.
• Now make sure that Full Scan is selected from the menu and then click the Scan Now button to get started.

Internet connectivity issues like Can’t connect to this network present a complex problem with simple solutions for PC and laptop users. First, it is usually recommended that users rule out problems with the internet connection, router, and Wi-Fi settings before proceeding to troubleshoot settings on your PC/laptop. Once the rest are ruled out, we can then proceed with the following troubleshooting steps and guidelines to fix your wifi connection issue: The first step is to update your windows network adapter driver. Connectivity problems may arise if your network driver is not updated or if it is incompatible with the network adapter. To do so, you may resort to any third-party driver scanning and installing programs found online. This solution should resort if users don’t want the hassle of perusing through windows settings that users may not be familiar with. However, this solution requires a pre-existing internet connection other than wifi, so it is recommended you have a backup internet connection via ethernet. The second step is to uninstall the driver for your network adapter. This solution is to resort if there is an issue with the driver as restarting the PC after the following steps let windows reinstall the driver again:

• Open the quick access menu on your keyboard by pressing the Windows key and X key at the same time and select “Device Manager” from the menu list.
• From the list of devices, select “Network Adapters”
• Usually on the top of the list is the Wireless Network Adapter
• Right-click the Wireless Network Adapter and select the option to “Uninstall device”
• You will be given a confirmation in a new separate window to proceed. Click “Uninstall” to proceed.
• After completing the previous steps, try rebooting your Windows PC and reconnecting to see if it works.

A third step is to disable the 802.1 1n modes of your network adapter by following the next steps:

• First press the Windows logo key and the X key at the same time to bring up the quick-access menu. And like the previous step, select “Device Manager”
• From the list of devices, select “Network Adapters”
• Right-click the Wireless Network Adapter from the drop-down menu and select properties
• Under properties, select the “Advanced” tab then select the 802.1 1n Mode. To the right drop-down menu change the option to  “Disabled” and click “Ok”
• After, try to re-establish the connection to see if the steps have worked.

In the event that any of the preceding did not fix your problem, it helps to take a second look at the router and network settings using the interface provided by your ISP. A simple reset to the back of your router often fixes the issue. Also, try to check if you have any other administrative capabilities over the network to determine whether your device, in particular, has been MAC filtered or if the frequency of your wireless adapter is not compatible with the broadcast frequency of your router.