Capslock does not work please help

i have a g15 keyboard and caps-lock does not work when i push, it was working fine yesterday now its giving me problems i tried system restore um reinstall the drivers but still not working i plug in my old key board and seems to be working fine any one know why ???
i have vista home premium 32-bit
Capslock does not work please help
*Tear* I never thought I'd see the day when the caps lock key doesn't work. I promised myself I wouldn't cry, so I won't.Try uninstalling the software for the G15 Keyboard, then installing it again. Also, try a different USB slot.

lip stain