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What's DOS?
Posts: 1
Registered: ‎05-25-2013
Location: United States
Views: 499
Message 1 of 3

y400 keyboard

I have a y400. Ever since I got it (in January) the keyboard randomly locks up, puts in random characters and stuff. I think I'll leave what it randomly types because it might help us diagnose the problem (if I can fix it). The symptom of the keyboard entry is usually all stuff from the top row of the keboard, qwertuiop,.z*cx


After its done typing, the keyboard locks up until one of the keys that can change focus is pressed like the windows key or the right click context key. This has 
3.bneen going on through several reinstalls and didn't happen during the short time I used Ubuntu on this laptop. I don't think that this is a virus (unless my recovery image has the virus) bn3./  because this was happening during the windows 8 OOBE during the last reinstall. 



20193 going to go back through and bold what the keyboard entered on its own.


Also, it tried to navigate away from this page several times while I was building this post.

Retired Support Specialist
Posts: 4,447
Registered: ‎04-22-2013
Location: Philippines
Views: 468
Message 2 of 3

Re: y400 keyboard

hi jesanfafon,


 Thank you for using Lenovo Community Forums!


     This kind behavior behavior is definitely Hardware.


You can try resetting your BIOS to default by Presing F2 or Fn+f2 to boot to Setup utility

               -Press F9 to load defaults -> Press Enter for Yes

               -Press F10 to save and Exit ->Enter for Yes


Do a Power Drain by Removing Battery and AC,

               - Hold down the power Button for 10sec.

               - Plug everything back in and Try checking the Keyboard.


You can also try

              Run the computer without the battery

              Run the computer without AC charger

              Try using Diff Power outlet.

              See if any show any difference when using your Keyboard.


If still same thing is happening I would consider Calling Technical Support for Assistance. Possible it's a faulty Keyboard


Hope this helps,


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Paper Tape
Posts: 1
Registered: ‎07-27-2017
Location: US
Views: 137
Message 3 of 3

Re: y400 keyboard

same problem. keyboard acts like it's possessed, typing in bn/, browsers randomly going "back", pop ups asking me if I want to change toggle key settings, etc. when I use an external keyboard no problem. shop wants to charge me $140 to replace

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