Keyboard is fine. Tested it on another PC. Mouse is also fine. Both are PS/2. Here's what happened. I recently did some routine maintenance using my Systemworks bundle, defragged a drive, and updated my virus protections. Worked for awhile with no problems. Next day, I noticed that there was a delay between what I typed and what appeared on screen. Everything else (mouse speed, application launching, file saving, etc.) worked fine. I restarted. Keyboard was still slow. Restarted again. Got the "Keyboard error. Keyboard not detected" message. Pushing "delete" to enter setup does nothing.