Cleaning the board didn't solve the problem that this PC has. On power on, it says (something like) 2A Keyboard failure. I can boot the machine and get into the setup menu by pressing Alt-Esc. However, the cursor keys and space bar do not work. At the DOS prompt, typing letter keys causes them to print twice (ddiirr, and so on). This is using a known good keyboard to test with. Does anyone have an idea as to what the problem might be? If it's in some custom-programmed keyboard controller or other custom chip, obviously the