Just wanna say thank you for all the help people have thrown out. I was having the same problem with my ps/2 keyboard after installing Sp1 for windows xp, until i grabbed belarc advisor, uninstalled the drivers, then ran a new hardware check. Very interesting problem, considering it seems that everyone who had the problem (me included), had a working keyboard right up until windows xp started. Did anyone else have this problem right after installing sp1?