My PS2 keyboard (and mouse) function in the bootprocess, but during the reading of win Xp it goes down (the Num lock don't light anymore)

Can you use the mouse to access the event viewer? If not then borrow a usb and try it. Might try to boot into safe mode.

Some non-use keyboards take too much current from the motherboard and seem to lock up the chipset that controls most of the i/o. As a rule I never suggest that one ever take out a keyboard connector and replace it with the power on. I have seen it work before but you can damage a fuse on the motherboard.

Try booting up in safe mode. Do yourself a favor BACKUP!

"As a rule I never suggest that one ever take out a keyboard connector and replace it with the power on. I have seen it work before but you can damage a fuse on the motherboard." You shouldn't suggest that, and I've never seen a mboard that has fuses for the PS/2 keyboard. ..... Try another PS/2 keyboard. Try your keyboard on another computer. Your cord may have broken wires inside of it. See response 1 in this. http://www.computing.net/windowsxp/...

I have never seen a motherboard without one. They are not always labeled F for fuse but they are there and can be called any number of things R,L,. The design is still there and anyone in manufacturing can show you where. If not see how the lans at the connector show up to a component. We have a few thousand computers that used special charactor keyboards. Don't know how many times we had to unplug the keyboards and plug them back in. I never thought it was a good idea.

Tks. the problem is, that it is working fine when I goes into the bios-setting, and the bios light the num-lock bulb up, also when running other things than XP, it is working fine. Only during the read-process (ca midway) the bulb goes out and the keyb. wount function anymore I have a cheap wireless unit Keyb and mouse I have tried them now, they are working fine, so I will stik to them