Here I have my problem. This threads title message appears during boot up. There is also "cmos checksum error - defaults loaded", because I cleared bios. If I don't plug in the keyboard, "keyboard error or no keyboard present" message appers too. I predict this is not keyboard issued problem neither cmos. Once has computer booted properly, so I was able to configure bios settings, but I did not connect hd preventing multiple starting and stopping. I did reset to computer twice or three time checking if everything is ok (there obviously "disk boot failure ..." message showed up at the end of bios bootup proces). Then I turned off computer, connected hd ide cable and power and started it again. Titled message was written out again. I am confused, because I'm sure I don't have keylock switch. There is a keylock conector, but it is disconnected. Problem had already appeared few years ago. Please help solving this problem. Any suggestion would be good. Thank You.