My neighbour is having the same problem. Keyboard works fine in BIOS and if we boot with WinPE XP (a self booting CD). But if boot to WinXP (in regular or safe mode), the mouse will work, but the keyboard doesn't. As soon as touch keyboard the mouse locks.
1. Saw conflict in hardware manager, switched to a USB mouse - same problem, except the mouse no longer locks
2. Switched to a USB keyboard - same problem.
3. Removed and reinstalled keyboard in hardware manager - same problem.
Installed the drivers that came with the new USB keyboard - didn't help.
I'm thinking this is a registry problem since works fine everywhere but in WinXP. But I don't know where to start on that. I think may have to reinstall the OS, but I think I read (not sure if this forum or another) where that didn't help either.
Hopefully someone has an answer!
