Malware disables keyboard xp

[Charlie claw]

Hello,
Win XP. Its a real odd one. When I boot up, the keyboard will work ok. if I press say f8 or f10. But then it gets to the windows log in page and NOTHING happens. I cannot log in. The key board and mouse have been totally switched off. I have run the ultimate start up disc and all sorts including linux but nothing will reinstate this keyboard. As I cannot start windows I am goosed.

 

[Emerald]

what kind of connection? USB or PS2

does the key board work in Safe Mode?