Windows 10: My keyboard and monitor do not work after I have done computer maintenance

Hi guys today my father and I did maintenance of our computer, everything went very well but when we put the wires back I saw that the monitor and the keyboard did not work, while the mouse and headphones did it, the keyboard lit a little and after it turned off and the monitor says it does not receive signal, I tried another keyboard and it worked but I do not understand why the keyboard and the monitor do not work can you help me please, PS Excuse the mistakes of expression or writing English is my second language.

:)

 

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.

 

Monitor, Keyboard and MOuse not working

You can try these troubleshooting steps: Monitor, mouse, and keyboard don't work

 

Computer powers on, but monitors, keyboard and mouse don't work (windows 11)

Hi,

I recently purchased a windows 11 PC and it has been working fine for about a month. I went to turn it on this morning and there was no response from my monitor(s), keyboard or mouse. So far I have tried the following:

1. Restarting the computer
   
2. Unplugging all the equipment then plugging it back into the computer.
   
3. Reducing the monitor count from 2 to 1
   
4. Moving the HDMI cable from the video card input to the motherboard input
   
5. After shutting down the computer, unplugging it from the wall for 30 minutes to reset the power
   
6. Tried to turn on the computer in safemode using Microsoft's suggested method for black/blank screens at there website. Start your PC in safe mode in Windows - Microsoft Support
   

So far still no response. Anything else I can try to get the computer functioning again?