Windows 10: Both Control Keys that Have Stopped Working

i'm using windows 10 in laptop lenovo y700
both CTRL key stopped working
i have tried this solution alt+ctrl+fn and it worked properly but now it stopped working

:)

 

down arrow key stopped working

My razor lycosa down arrow key decided to not respond at some point today. The other ones work and so does the numpad arrow if i turn off the numlock. Sounds like its just broken and im screwed, but any suggestions?

 

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.

 

random keyboard keys stop working?

i went out today and everything was fine, i come home and three random keys stopped working, maybe more i havent noticed yet. the three key on the left side of the keyboard not working, the left shift stopped working, and the enter key stopped working, but the one on the numpad works fine. no one was home to use it, nothing spilled on it, i tried it on another computer and same deal. im gonna go buy a new one tomorrow but it makes me sad cause i loved this keyboard lol, microsoft ergonomic 4000. ill probably buy the same exact one if its in stock tomorrow, this one lasted or 4 years about. im just confused why three random keys spread out stopped working at the same time...seems very weird