I've had this problem for quite a while, and it's a little hard to explain. I have a Dell e1705 running Windows MCE. I have installed all the latest service packs and security updates, and i've done full virus/spyware scans that have come back as clean. My problem, is really just a big annoyance. Basically, once the computer boots to the login screen, when it comes time to enter login/password, windows will not recognize any of the keys and in fact will instantly beep on a keypress. However, if you hold down the key for about 2 seconds after it beeps, it will then finally register a keypress. So it is still possible to login to windows, but now takes 10x as long. This only happens during logon, once logged in, the keyboard is fine. Same when inside the BIOS. Besides going as far as just re-installing the OS, is there anything else i could try? Like re-installing winlogon.exe through recovery console?