Keyboard stopped working after installing Razer surround.

[HeavenlyStar]

i recently installed a razer program and my friends USB drivers onto my computer, when they were finished i needed to reboot my computer so i did, once it was done i could use my keyboard in the bios setup and such but i cannot use it to login to windows. i tried booting in safe mode, still no luck, i tried booting in safe mode with command prompt it boots in safe mode but the command prompt does not come up so i cannot use that. i havn't got my install disc, its gone missing so a complete reinstall is out of the question. i'm in pretty dire need of some help here.
many thanks.
some extra stuff you may need.
Using a wired Razer keyboard
wired mouse
an M5A78L-M mobo
win 7

 

[HeavenlyStar]

bumbing forhelp

 

[Mark Phelps]

Forcing an install of drivers from someone else's PC onto yours? This seemed like an OK thing to do?

Saying safe mode doesn't work doesn't help us. What happens, in detail, when you try to boot in safe mode?

If your friend's PC is running Win7, you should have them use the Backup feature to create and burn a Win7 Repair CD.

Boot your PC using that PC and see if you can get into safe mode that way. It won't load any drivers from your hard drive, so that should work for you.