I have tried to install XP at least 10 times now on this system. Xp does not lockup itself, because I can plug a USB mouse in and a mouse curser will pop in, but you cannot move it. But the keyboard and mouse are always non-responsive, no matter what I do. ME, Win9.x work great! I have pulled out all the cards in the system, and loaded it up with no extra hardware other than the video card. Still the same issue, no keyboard or mouse. I download the newest flash for the TYAN S1854 Motherboard, and flashed it. Still no KB or mouse. The MB is not on the HAL at microsoft, so does anyone have a suggestion.