Keys C, V and H not working?

Hello,
I had a strange thing.

I was browsing using Google Chrome 11.0.686.1 (Official Build 76348) dev sudently I notice that the letters " c", " v" and " h" weren't working.
Those keys weren't working on Chrome and on the Windows 7 find bar (in the Start menu)...

But those keys were working on UltraEdit ( UltraEdit Text Editor | UltraCompare file compare | UEStudio | UltraSentry.

Also, those keys works well if I press "Shift+c" or "Shift+v" or "Shift+h".
But not working if I press "CAPS LOCK" and then "c" or "v" or "h".

Strange, this just happens to me twice in 2 months.
Also, I have just reinstall my Windows 7 64 bits Ultimate Spanish with SP1.

Any ideas?
I don't have any keylogger or AutoHotKey ( AutoHotkey - Free Mouse and Keyboard Macro Program with Hotkeys and AutoText) installed.

Strange

 

YES. This happens in multiple programs. Mainly when visual studio is running. Anyone else know what's going on?

Alienware m17x, windows 7

 

Here you can find more information about the problem: http://forum.notebookreview.com/alienware-m15x/591956-some-keys-keyboard-not-working.html

But only information, no solution