Windows 10: ctrl alt delete keyboard shortcut not working on welcome screen

when I log in, the computer does not respond to pressing the ctrl alt delete combination, but the keyboard is working because I can make changes to the bios. I already disabled fast boot in BIOS, tried to use system restore at startup, but all this did not work. I installed a new system on a different hard drive and now have access to files on a locked system, but I would like to fix my first system. I also made changes to the registry and created the disabletaskmgr parameter but that didn't help. I think disabling the prompt for this key combination through the windows local security poli

:)

 

Keyboard shortcut Alt key not working

Hi,



Before we proceed, I need more information to help you better.

• 
  Since when are you facing this issue?
  
• 
  Did you make any software or hardware changes on your computer prior to this issue?
  
  
  

I suggest you to follow the steps below and check if it helps.

Step 1: You may check if the ALT key is functioning correctly in on-screen keyboard. It will help us to verify if there is any issue with the keyboard.

Follow the steps below to open On-screen Keyboard.

• 
  Windows + Q, type OSK (on-screen keyboard)
  
• 
  And check if it works
  

Step 2: Run Hardware and device Troubleshooter.

Windows 10 has a built-in troubleshooter to check and fix issues with hardware and devices. I would suggest you to run this troubleshooter to check if the issue is with your devices. Refer these steps:

• 
  Press Windows key +X, select Control panel.
  
• 
  Change the view by option on the top right to Large icons.
  
• 
  Click on troubleshooting and click on the view all option on the left panel.
  
• 
  Run the Hardware and devices troubleshooter.
  

Keep us posted on this issue so that we can assist you better.

 

Keyboard shortcut Alt key not working

I have no use of my hands so must use a mouthstick. With the Windows 10 keyboard shortcuts the Alt key will not work in many instances but will in others even though it's listed as working in all. It's also all over the board app to app. What I've found:
Alt - F4 works as exit on most but not all apps, Alt - left and right for navigating forward and backward in any app do not, Alt - home doesn't work in any web browser, Alt - ctrl -del doesn't etc...

I have 2 computers with the same problems. A Dell Precision M4800 laptop and a Dell OptiPlex 990 desktop. Is it Dell related?

Any help would be appreciated,

Steve

 

Keyboard shortcuts work only when no visible windows on screen


Keyboard shortcuts work only when no visible windows are on the screen.

I have to return to desktop in order make them work.

(ctrl+alt or other keys )