Headphone jack is not working on a laptop

A lot of users rely on keyboard shortcuts to carry out tasks on their PCs. One of the most common keyboard shortcuts used is the Ctrl + Shift + Esc which opens the Task Manager. As you can see, the Shift key is not just used to capitalize a text as it can also be used for other functions and plays an essential role in operating a computer. However, if you suddenly find it not working, read on as this post will help you fix the problem. If your Shift key is not working, there are several potential fixes you can check out to fix it. These are the different ways to get rid of the Shift key not working issue on Windows 10:

1. Physically clean the key and keyboard
2. Disable Sticky Keys.
3. Update, Reinstall, or Rollback Keyboard driver.
4. Test the keyboard on another system.
5. Check your connections
6. Run the Hardware troubleshooter
7. Troubleshoot in Clean Boot State.

Option 1 – Clean the keyboard keys physically

Your keyboard might not be working properly due to some dirt or other corrosion. Thus, you need to clean your keyboard, especially the Shift key. First, you need to shut down your computer and then unplug the keyboard if you are using a desktop computer and then prepare it for cleaning. After that, use a small cotton ear cleaning tool to get between the creases and clean them. You can dip it slightly in alcohol to make it more efficient in cleaning dust and dirt. And if you can, you have the option to pull apart the keyboard completely and then wipe away all the corrosion from the inside. Once you’re done, put the keyboard back together and then plug it back into your PC. Now turn your PC on and check if the Shift key is now working.

Option 2 – Try to disable the Sticky keys

Another thing you can try is to disable the Stick keys. How? Refer to these steps:

• Tap the Win + I keys to open the Settings app.
• After that, navigate to the Ease of Access section, and here, select Keyboard.
• Next, make sure that the option for Press one key at a time under the Sticky Keys is toggled off.

Option 3 – Reinstall, update or rollback your keyboard driver

Once you’ve determined that the problem is in the software part of the keyboard, it is now time to try to reinstall, update or roll back your keyboard drivers. To reinstall the driver for your keyboard, refer to these steps:

• From the WinX Menu, open the Device Manager.
• In the Device Manager, you should find your laptop’s keyboard under the “Keyboards” option. Right-click on it and select the “Uninstall” option.

Note: If you’re not quite certain about your laptop’s keyboard, you can uninstall all the keyboards if there’s more than one.

• After that, restart your PC and see if the keyboard driver is installing automatically. If not, open the Device Manager again and right-click on Keyboards, and select the option “Scan for hardware changes” to install it.

Once the keyboard driver is installed again, check if your keyboard is now working properly or not.

Option 4 – Try connecting the keyboard to a different USB port or another computer

The problem might have something to do with the USB port that’s currently in use by your keyboard. It could be that it’s not working so it makes sense to unplug it and attach it to another USB port. You can also clean the USB port on both ends to ensure that they are not affected by corrosion. In addition, you can also try connecting the keyboard to a different computer and see if the Shift key works there or not.

Option 5 – Try to check your connections

You can also try checking if the connection mode you are using for your keyboard is functioning properly. For instance, if you are using a Surface 2-in-device, you can clean the connection pins and see if it resolves the problem.

Option 6 – Run the Hardware and Devices Troubleshooters

• 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.

Option 7 – Put your PC in a Clean Boot State

You might also want to put your computer in a Clean Boot State to fix the problem with the Shift key. It could be that there is a third-party program that’s preventing the Shift key from functioning. To isolate this possibility, you need to put your computer in a Clean Boot State.

• 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” check box 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” check box.
• 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.)
• Now try to connect the external devices and check if the error is now gone.

Realtek sound device not playing sound is a common Windows issue.  It happens occasionally and luckily it can be solved with a little effort and in a short time period. Today in this article we will explore the most common reasons and solutions for driver malfunction for Realtek inside Windows 10. If you have this particular problem, go from step 1 to the last step since all steps are meant to go from simplest to the most complex. All of that being said let us fix your Realtek driver issue.

1. Check Speakers or/and Headphones first

   The first thing would in any troubleshooting be to check are your speakers turned on or are your headphones connected and the volume or switch on them is set properly. Nothing more embarrassing than spending an hour or so troubleshooting only to find out that issue was in a malfunction of speakers or them not being turned on.

2. Check the Volume control in Windows

   Same as the previous step where you have checked hardware, now it is time to check to see if the volume control is set properly and not by any chance muted or volume is brought all the way down.

3. Check if the Device Manager is reporting an error and update the driver

   If both hardware is functioning properly and volume control in Windows is set correctly then the issue might be in Windows not detecting device or driver malfunction. In any case, the Device Manager will be the one who will report this problem. In order to check to see if the driver is properly working press ⊞ WINDOWS + X to open the hidden start menu. Once it opens, click on Device Manager to open it, If you have a driver device error inside Windows, you should see it immediately when entering the Device Manager, it will have a yellow exclamation mark beside it. Right-click on it and choose update driver.

4. Reinstall driver

   If driver update failed or you already have the latest drivers, reinstalling them could fix the issue since drivers might have corrupted during installation of some update or application. Follow steps from point 3 to get to the driver in Device Manager, then right-click on it but instead of update choose to uninstall. Reboot Windows once the driver is uninstalled and Windows will install a new one.

5. Check Windows update

   Check to see if the latest Windows update is installed, update your Windows if needed

6. Fix driver issue with DRIVERFIX

   If everything else fails, get DRIVERFIX, a premium solution for your PC issues, and fix driver errors.

Error Code 0x803f7001 – What is it?

Error code 0x803f7001 results when users fail to update their Windows operating system. This often occurs when they seek to update from Windows 8 or 8.1 to Windows 10. Users will be able to identify error code 0x803f7001 because of the following common symptoms which occur:

• Inability to upgrade your Windows operating system to Windows 10
• Message box with error code 0x803f7001

Solution

Error Causes

The causes for error code 0x803f7001 are usually associated with the use of an unlicensed version of Windows 8 when upgrading to Windows 10. In such cases, the error code occurs when there is no valid Windows license or product key on your device.

Further Information and Manual Repair

To fix error code 0x803f7001, users may not necessarily need technical knowledge or the help of a Windows repair technician. Usually, the process is simple and can be resolved with the use of a valid product key. However, if users have trouble implementing the instructions found in the manual repair methods listed below, contact a Windows repair specialist for help or use an automated tool that provides the best solutions for problems like error code 0x803f7001.

Method One: Use a Valid Product Key

A product key is a 25-character code that enables users to activate their Windows operating system. To successfully activate your operating system and resolve error code 0x803f7001, enter the product key in the correct order. Once you have a valid product key in your possession, begin to resolve the error code by following the instructions below:

• Step one: Click the Start button then select Settings
• Step two: Select Update & security then Activation
• Step three: Click the Change product key
• Step four: Type in your valid product key. (Ensure you include the 25 characters of your product key in the correct order.)

Once you type in the valid product key, you should be able to successfully upgrade to the latest version of Windows. However, this method is only effective if the error code 0x803f7001 on your device is caused by issues related to the product key.

If the error code reappears after attempting manual repair method one, move to the next manual method suggested below.

Method Two: Reinstall Genuine Version of Windows 8

This method is crucial for you to perform if method one was not successful. Begin the reinstallation process by ensuring you have a genuine version of Windows 8. After reinstalling this version of your Windows operating system, attempt to upgrade to Windows 10 by following the instructions below:

• Step one: Type Settings in the search box near the Start button or click the Start button and select Settings
• Step two: After clicking Settings, select Update & Security
• Step three: Select Windows Update then the Check for updates tab
• Step four: Activate Windows 10 update

If this method is successful, you will no longer see error code 0x803f7001 pop up in a message box. You will also be able to access Windows 10, and all the benefits it provides users, on your device.

Method Three: Install an Automated Tool

Automated tools help PC users eliminate common issues such as Windows error codes. To address or rectify error codes like error code 0x803f7001 download a powerful automated tool on your machine. This tool enables users to access quick solutions. It also scans for and corrects issues that may result in error codes or poor PC performance.

Hello and welcome to our Business Email Etiquette. Most people have experience in writing emails at some point before in their lives. However, the emails an average person writes are probably personal emails and not mails for work purposes. Emails you send to friends are incredibly different in content and context to business emails you would send to customers or employers or even other colleagues in your workforce. So, if you have a job that involves you writing emails to people in business style, learning business email etiquette is an absolute must for you.

 1. Heading layouts

When you are sending emails to friends, you generally lay them out like a memo. This means there is very little detail in the layout besides basic greetings and paragraphs, usually starting with the greetings. However, with a business email, it is best to lay it out exactly like you would lay out a formal letter. You need to put the company’s address in the right-hand corner and the date as well. Only then must you go on to the greetings. This will make your email look more formal, making you seem like a professional who knows what they are doing as opposed to someone who just couldn’t be bothered spending the extra time to get the layout right.

 2. Proper greetings

 When you are sending an email to a friend, you usually greet them informally. If their name was Mary Johnson, you’d probably start your letter with a ‘Hey Mary’ or a ‘Hello Mary.’ However, this is not considered a professional way to write an email to a customer or other important person in your business. Again, you must use the proper method that you would greet someone with were you writing them a formal letter instead. If your customer is Mary Johnson again, you should greet her with respect. ‘Dear Ms. Johnson’ would be the most appropriate way to start off your letter’s actual body in this case. If you do not know the recipient’s name, then you should start with a simple ‘Dear Sir or Madam.’ Politeness will always get you incredibly far, no matter what line of work you are in.

 3. Informal language

 You should get straight to the point with your email. Don’t dawdle on with it like you would if chatting to a friend and don’t write it how you would speak either. You use language that sounds impressive and smart while not using such obscure language that your recipient doesn’t know what you are saying. All the time, you must keep it informal where possible, possibly even impersonal as well. It will make you seem very professional in the long run.

 4. Signing off

When you are sending your email, you must end it as you would with a letter also. Don’t just say ‘Bye’ and your first name; that is too personal. You need to say ‘yours sincerely if you know the name of the recipient and ‘yours faithfully’ if you do not. Then you should end with your full name and whatever position you have at the company. (CEO, technical staff etc.) So there you have it! All you need to do now is to show your boss that you can handle the emails from now on!

As you know, the Windows 10 operating system has support for a dedicated high-end graphics processor that brings in capabilities inside to support Graphics Cards from NVIDIA or AMD. This helps the operating system to function in a much better way by segregating the graphics-intensive operations from the CPU to a dedicated processor. However, there are times when it also experiences some issues that lead to some errors like the “Failed to create a graphics device” error. It is possible that your computer has more than one screen or graphics card which is why you’re getting this error. To fix it, you need to try reinstalling DirectX or reinstall the Graphics Card driver. You could also try to manually check the hardware or power cycle of your computer. To start troubleshooting the “Failed to create a graphics device” error, follow the given suggestions below.

Option 1 – Try running the DirectX Diagnostic Tool

Since the error has something to do with the DirectX Graphics APIs, you can run the DirectX Diagnostic tool to resolve the problem.

Option 2 – Try updating or re-installing DirectX

If the DirectX Diagnostic tool didn’t work, you can try to update or reinstall DirectX instead. This can help in fixing the problem because when you reinstall or update DirectX, it will replace the incompatible or corrupted components of DirectX from your computer.

Option 3 – Update or reinstall the Graphics card drivers

• First, boot your computer into Safe Mode.
• After that, tap the Win + R keys to launch Run.
• Type in MSC into the box and tap Enter or click OK to open the Device Manager.
• After that, a list of device drivers will be displayed. From there, look for the Display Adapters and click on them.
• After that, right-click on each entry under the Display Adapters and select the “Uninstall Device” option from the menu.
• Now restart your computer.
• After restarting your computer, go to the Settings app and Check for Updates in the Windows Update section.

Note: You also have the option to go directly to the website of your graphics card manufacturers like NVIDIA, Intel, or AMD and go to the section called Drivers then check if there’s a new available update – if there is, download and install it.

Option 4 – Try to physically check the hardware of your computer

You might also want to check the physical status of the hardware in your computer. You can clean the dust off the hardware components like the Graphics Card of the computer. In doing so, you have to use a small blower or you could also use a soft cloth and run the components gently. Make sure that you don’t damage any parts with moisture or cause harm to any circuits while you carry out this task.

Option 5 – Try to power cycle your computer

You could also try to power cycle your computer to fix the error. To do that, you have to turn off your computer in a way that the power is completely cut off and all the fresh configurations of files are loaded when your computer is booted up. The first thing you have to do is to shut down your computer and if you are using a laptop with a removable battery, you must remove the battery for a couple of minutes before you plug it back in and boot your laptop. On the other hand, if you are using a desktop computer, press and hold the power button until the CPU goes off and take out the power cable for a minute or so and then plug it back in. Boot your computer and see if the error has been resolved.

Rundll Error - What is it?

Rundll Error, DLL is also known as Dynamic Link Library is a Window library that basically consists of instructions and codes used and shared by multiple programs installed on your system. It helps programs load and run smoothly. Rundll error is generated when the system fails to access DLL files thereby hampering your ability to successfully run your desired program.

Solution

Error Causes

The rundll error code is triggered due to multiple reasons such as:

• DLL file affected by virus and malware
• Poor program installation
• Invalid Windows registry entries

It is advisable to fix the run.dll error immediately without any delay because this error exposes your PC to serious threats such as system crash, freeze, failure, data loss, and even privacy threats like cybercrime, data breaches, and identity thefts.

Further Information and Manual Repair

To resolve the rundll error on your system, here are some solutions that you can try:

Solution 1: Reboot your System

Sometimes rebooting your system can also resolve the issue. However, if it doesn’t then you need to try some other solution to fix it.

Solution 2: Identify the Program Triggering the Error

To fix rundll error, the first thing that you need to do is to identify the program generating this error and check it for validity. For this, simply analyze the rundll error dialog box. Let’s say you get the following run.dll error on your system Error loading

C:\WINDOWS\system32\usvdgpo.dll.

This error message indicates that the program ‘usvdgpo’ is causing the run.dll error on the system. Once the program is identified, the next step is to stop it manually. For this, you go to the start menu and click run, now type ‘services.msc’ in the dialog box, and press ‘Enter’. After that right-click the related process to your rundll error and then click the ‘Stop’ button to stop the program. Now close the window. Though this action will stop the process it will not remove the reference to the bogus items. To remove that you will have to remove the program from the Windows Registry. This can be done by typing ‘Regedit’ in the Run dialog box. This will open the registry editor. From the keys listed in the left panel, navigate to the following key: HKEY_LOCAL_MACHINE/Software/Microsoft/Windows/CurrentVersion/Run. Now right-click on this key and click delete and then simply close the windows registry and reboot your system. After this, you will then have to uninstall the program to completely eradicate the rundll error. To do this, go to the control panel, Add/remove programs, and right-click to uninstall the program causing the run.dll error on your system. Click yes to confirm your decision. Once the program is uninstalled, reinstall the program using the program CD to get yourself an error-free program. This procedure is tricky, time-consuming, and maybe slightly challenging for you especially if you are not a computer programmer.

Solution 3: Run an Antivirus

If the cause of the run.dll error is a malware attack then you need to download an antivirus and run it on your system. However, this may impact the speed of your PC. Antivirus is notorious for slowing down PC speed.

Solution 4: Download Restoro.

If you are not a computer programmer, then running Restoro is possibly the easiest way for you to resolve rundll errors on your system in seconds. Restoro is an innovative, cutting edge, and multi-functional feature-filled PC repair tool that can be used to repair all kinds of system-related errors including rundll errors. The registry cleaner utility cleans up the RAM by removing unnecessary and obsolete files like junk files, invalid registry entries, and files from the uninstalled programs. It resolves disk fragmentation issues, repairs dll files, and the registry. In just a few clicks you can easily repair the registry and remove malware thereby resolving rundll errors on your system. Operating Total System Care is quite simple. It has a user-friendly interface and easy navigation. It is safe, efficient, bug-free, and compatible with all Windows versions Click here to download Restoro and resolve ‘rundll errors’ and access/run programs on your system smoothly.

So you have just got home from that new computer store with your fancy and all-new mouse, screen, keyboard, etc. You plugged in your new component, Windows detected it, installed drivers for it and it is working like a charm. A few months later down the road and the computer starts little by little to slow down. Plug and play is a great concept, and automatic detection is even greater but how time passes old unused stuff piles in your hard drive and in Windows itself thus slowing down your computer and taxing it more and more as new components and software are added. Old drivers from old components sadly are not removed from Windows itself and over some larger period of time they can pile up and slow down your daily operations on the computer or even cause some problems in it. This guide will teach you how to manually remove old unused device drivers from your Windows so it is fresh and like new again.

Making old devices visible

In order for us to remove old drivers, the first thing we must do is make them visible in our device manager, old drivers are hidden and will not show up, we must make this happen. We do this by pressing WINDOWS + X keys on your keyboard to bring up a hidden menu in Windows. Once the menu appears, click on Command Prompt (admin) Once the command prompt with administrator privileges comes on-screen type in it following string: The device manager will open, go to view > snow hidden devices in order to show unused devices.

Removing old device

Open any category and if there is a device that was once used and still has its drivers in the system it will be shown as faded out. Right-click on the device and click on uninstall device to remove it completely from your system. Please always be careful when removing devices so you do not remove the device which is being used by mistake and always double-check that you are removing something that you used to have on your system. This method will show all hidden devices even ones that are hidden but crucial to the system working properly.

If you encounter an error message saying, “The connection was denied because the user account is not authorized for remote login” when you try to establish a remote connection, read on as this post will help you resolve the problem. This kind of error occurs when the targeted host does not allow you to access that system remotely. Based on the error, you are not authorized to log in remotely which means that you need to obtain the correct permission. There are several potential fixes you can try for this error. You can try to check the Remote Desktop Users group or add users to the Security group or check the Remote Desktop Service itself. Refer to the options provided below for more detailed instructions to fix the “The connection was denied because the user account is not authorized for remote login” error.

Option 1 – Try checking the Remote Desktop Users group

You can encounter this error when the Remote Desktop Users group does not have any permission for your user account that you are using to establish a remote connection. Thus, you need to make sure that your user account is a member of the Remote Desktop Users group. How? Refer to these steps:

• Tap the Win + R keys on your keyboard and then type “cmd” in the field and tap Enter or click OK to open Command Prompt.
• After opening Command Prompt, type the “lusrmgr.msc” command and tap Enter to execute it.
• Alternatively, you can also search for “lusrmgr.msc” in the Start Search and once you’ve opened it, select Users and then double click on your user name to open its Properties.
• From there, switch from the “General” tab to the “Member Of” tab.
• Next, if you can’t see any Remote Desktop Users group under the Administrator, you have to add it. To do that, just click on the Add button.
• After that, on the newly opened window, click on the Advanced and Find Now buttons, respectively.
• And in the Search results box, double click on Remote Desktop Users.
• Now click on the OK button to save the changes made and check if you can now connect to a remote host or not.

Option 2 – Try to add a user to the Security group

You can actually block or allow a user from logging on through the Remote Desktop Services. However, if you do not have the right setting, you won’t be able to use this functionality. Thus, you need to confirm this setting. To do that, follow the steps below.

• In the Start Search, type “secpol.msc” in the field and tap Enter to open the Local Security Policy panel.
• From there, go to User Rights Assignment.
• Next, look for a policy named “Allow log on through Remote Desktop Services” located on your right-hand side and then double click on it to open its Properties.
• If you were not able to find the Remote Desktop Users under Administrator, then you have to add it by simply clicking on the Add User or Group button.
• After that, enter “Remote Desktop Users” in the blank field and click the OK button to save the changes made.
• Now restart your computer and try connecting again to the remote host.

Option 3 – Try checking the Remote Desktop Users group

There is a service that’s supposed to be running and needs to be set up correctly for you to connect to the remote host. And so you need to ensure that this service is up and running. To do so, follow these steps:

• Tap the Win + R keys to launch the Run utility.
• Then type “services.msc” in the field and hit Enter or click OK to open the Services Manager.
• Next, look for the Remote Desktop Services and double click on it to open its Properties.
• After that, go to the “Log On” tab and select the “This account” option and then click on the Browse button.
• On the next screen that appears, look for the Advanced button and click on it and use the Find Now button to search.
• You will see “NETWORK SERVICE”. Double click on it and then save the changes you’ve made to the settings.
• Finally, restart your PC and see if the problem is now fixed.

Error Code C0000135- What is it?

C0000135 is a blue screen of death error code (BSoD) also referred to as the ‘Stop’ error. This error code usually pops up on the screen at startup. The system stops and displays the error code:

Stop: c0000135 {Unable to Locate DLL} The dynamic link library FILE_NAME could not be found in the specified path Default Load Path

Solution

Error Causes

There are multiple reasons behind the error code C0000135 BSoD such as:

• Missing and damaged .DLL files which is linked to registry corruption
• Malware attack
• Viral infection

When this error code pops, the computer screen turns blue and hampers your ability to use Windows successfully. Nonetheless, if the error C0000135 is not repaired timely this error can cause a great deal of damage to your PC. It puts you at risk of:

• Data Loss with possibly no chances of recovery
• System Failure and crash
• Cybercrime if malware is the underlying cause of the occurrence of the error code C0000135

To avoid serious PC damages and inconvenience it is advisable to repair this error immediately.

Further Information and Manual Repair

There are two ways to fix the error code C0000135:

1. Hire a Professional
2. Download Error Tools PC Repair

Hire a Technician

Hiring a professional can be costly. You may have to pay hundreds of dollars to the technician to resolve this issue. However, the latter option is not only money-saving but also time-saving, convenient, and simple. In fact, it is so easy that even if you have no technical knowledge you can still work your way around it and repair the error in seconds.

Download Restoro

Restoro is a top-quality, efficient, and multi-functional PC fixer. It is integrated with cutting-edge technology. It has a comprehensive suite of advanced utilities like an intuitive registry cleaner, powerful anti-virus, and a smart system stability detector. All of these exciting and highly functional features are combined together in one. With this helper, you don’t need to search for the underlying cause of the error. When you experience the BSoD error code C0000135 on your system all you have to do is run it for a scan and its intuitive in-built technology will detect the issues and causes in no time and display them to you in the form of a comprehensive scan report. Once the scan is complete, you just have to hit the repair tab to resolve it. It’s that easy and fast! Restoro is powered by a highly functional registry cleaner. This cleaner helps detect all the errors related to the registry. It cleans the unnecessary files cluttering and damaging the hard disk including the junk files, invalid registry entries, internet history, and the files from the programs that you have uninstalled on your PC. These files acquire a lot of disk space and damage .dll files as well. Overloaded registry also slows down the system and the CPU and RAM then require more power to start and function. The registry cleaner embedded in the Restoro removes and wipes out all this unnecessary clutter, clears up the disk space and repairs the damaged files, and corrupted registry, and thus resolves the error code C0000135 on your system. Restoro also serves as a system optimizer. And when you repair issues on your PC with this helper, you’ll see a massive difference in the speed and performance of your computer. It will run smoothly and boot efficiently. Restoro is safe to use. It is bug-free and used widely by PC users experiencing different types of PC-related issues including the error code C0000135. It has easy navigation and a user-friendly interface. You can download and run Restoro on all Windows versions. Click here to download Restoro today!

In recent times, some Windows 10 users have seen an error code BCM20702A0, when using Bluetooth and they are concerned as to what it is all about. We can say for certain that it has something to do with your Bluetooth driver. The error message in question is:

The drivers for this device are not installed. There are no compatible drivers for this device.

The problem here tends to no longer allow specific Bluetooth components to properly communicate with your Windows 10 operating system. It also affects laptops that do not have native Bluetooth support; therefore, the manufacturer installed a dongle on the inside to deliver the service. This is not the best way to do things because native support is always better. On the other hand, maybe you’re using a Broadcom USB Bluetooth dongle that is acting up, and as such, the error is showing. Below are solutions provided for this particular error and how to eliminate it.

1. Run the Bluetooth Troubleshooter

   Press ⊞ WINDOWS to open the menu and select settings In settings choose Update & Security Go to troubleshoot and on the right panel click on additional troubleshooters Click on Bluetooth Select Run the troubleshooter, then sit back and allow the tool to do its thing. Once you’ve completed the task, click on Apply this fix if any repairs are needed Reboot your computer

2. Install Broadcom driver from official website

   Windows drivers for Broadcom Bluetooth devices are no longer posted on their website. They should be available through Microsoft’s Windows Update service. If drivers were not downloaded automatically by Windows Update, use Device Manager to refresh the driver from Windows Update. However, the Broadcom Bluetooth drivers seem to be available here on the Lenovo website. To fix the BCM20702A0 driver error, you may download and install them. After downloading it, right-click on the downloaded item, and select Run as administrator. After installation, restart your computer, then check again if it works.

3. Remove all Bluetooth drivers and USB controllers

   If previous solutions did not work, go to device manager and remove all Bluetooth devices along with all USB controllers. Reboot your computer and Windows will automatically reinstall and set all devices.