I bought a Microsoft Comfort Curve 3000 keyboard today.
When I plug it into my PC, Windows shows it can't find the drive, and it won't recognize a single key.
However, I can use this keyboard in the BIOS setup screen and on other PCs. Before that I used a Logitech MK250, it's a wireless USB suite.
EDIT: I use windows 7 x64
UPDATE: I have tested another USB Keyboard,it's also failed.Maybe my Windows cannot install USB keyboard drivers?