Really,Really weird and annoying problem on W7

Hi,I run a Windows 7 32bit home edition os and i face a really,really,really odd and annoying problem.Many times the "9" button is pressed on its own and it doesn't stop!It just keeps being pressed on its own so i have to restart my pc!The thing I have noticed/did

1:Unplugged keyboard(it was still being pressed!)
2:Unplugged keyboard & mouse(still being pressed!)
3:Installed other keyboard & mouse(the same)
4:All the times that this thing happened i didn't press the "9" button
5:It usually happens after I play counter strike for about 30 minutes(don't know why,it may be the too many clicks on the mouse or the fps!I don't really know!)
6:Run spybot seek & destroy
7:Kaspersky full scan
8:Windows fully updated
9:Run trojan remover

Please I really need some help here,cause I don't know what's going on.I would gladly reinstall windows and format the hard drive but that doesn't mean the problem will be solved!I really need some ideas thrown cause I am really desperate!
Thank you in advance.

Will do.Thanks for the feedback.I hope I'll find you again If these don't work!

ty man,i did what you told me and there was no sign of the problem,so i decided when it would happen again i would close all the applications one by one.In the end it was the razer drivers.Don't know why.But at least I found the source.Thx again!

Just now,1 minute after i closed the drivers My pc crashed :/Now it shows me that my audio service is not running although i have sound *_*.I don't know how all these are related,I just mention odd things for my pc!It's the first time a blue screen pops up!Any thoughts?

I just closed the drivers again and the same thing happen.No problem with the audio this time.Just the blue screen and the restart.I can't understand how it is possible to have a blue screen if i close my mouse drivers!It's really weird!

because the mouse is a razer,it shows you a menu,after you have installed the drivers,where you can optimize things like sensitivity,macros etc.After I closed that the problem stopped!But my pc crashed after 2 minutes!I have created another thread at the crash section.Thanks for your help,consider this topic closed so i won't be accused of double posting!Thanks again!