I have consult other experts and they say that is an issue with the drivers, however I cannot find any support in the HP … After resetting the laptop, the keys were back to normal except the left ctrl key. Right-click Start (), select Shut down or sign out, then select Restart. We recommend starting a new thread for your issue. If not you may need to replace the keyboard. What causes the issue? One of the core operating system files on your PC might have got corrupted or deleted due to which you have issues booting and you are getting a 3F0 error. Click the arrow next to Keyboards, right-click the keyboard device name, then select Uninstall to remove the device from Windows. I understand the left control key has stopped functioning on your PC. Thanks. The function like the screen brightness located on those and the volume buttons aren't working. Part 1. Method 1: To check if Ctrl keys work in Onscreen keyboard. I didn't know where else to ask about this, since this probably isn't considered primarily a Windows problem. As you mentioned you are getting boot device not found with error 3F0 on your PC. Turn off the computer and wait five seconds. I tried pressing both shift keys simultaneously but this did not fix the problem. If you’re encountering the issue on a laptop, plug in a USB keyboard and see if the left CTRL-key is usable. The function like the screen brightness located on those and the volume buttons aren't working. Any fix to this? Ask the community. † The opinions expressed above are the personal opinions of the authors, not of HP. Service or replace the integrated keyboard in the notebook. PLEASE NOTE: Do not post advertisements, offensive materials, profanity, or personal attacks. Try using Ctrl keys and check if that helps. Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution. Refer this article to know more information about using system diagnostics. Refer this article to know more information about performing a system recovery. Try performing a system recovery on your PC and check if it helps. I had a situation in the HP G62 that the action keys and left WIN button were not working - I tried various drivers etc. • Example: Windows XP, Windows Vista 32-bit, Windows 7 64-bit Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping! Click Here. Plugging the keyboard into a 2.0 or 3.0 USB port. Please help! If you’re encountering the issue on a laptop, plug in a USB keyboard and see if the left CTRL-key is usable. Check if any key on the keyboard has got stuck or pressed. Operating System installed (if applicable) 4. A [software component] will damage your computer message displays when printing or while installing - Click Here, Resolve Windows 10 or update issues on HP computer or printer– Click Here. Also, try running a system diagnostics test on your PC and check if the hardware components on your PC to assist you better. Try to uninstal keyboard driver, restart your laptop, then reinstall it 3. Restart the notebook. It's not just in Windows, I tried to do system repair via F11 and the keyboard didn't work there either. It seems that I have reseted the function of those keys. but after I verified that the key presses for these buttons were not being registered in keyview it led me to believe that this was a hardware issue. On the BIOS Setup screen, press F9 to select and load the BIOS Setup Default settings. Both CTRL keys have the same problem. Is there anyone who could help fixing this issue? Please provide the product number of your PC to assist you better.