I recently got new keyboard. Acme KM03 Slim Multimedia. But then I connected some keys didn't work. Keys are: left "CTRL", "DELETE", "5", "6", "-", "+" and some f-keys. However "DELETE" works fine in boot state so I think it could be something with drivers. I use Windows 7 Beta, tried installing Windows XP. It didn't fix the problem. There was no drivers disk with keyboard.