Keyboard not detected

[anlaoch]

Hi.

I'm trying to fix a HP computer which won't recognise a ps/2 keyboard. No ps/2 keyboard ever works in this machine (even though they work in other pc's), and they don't turn up in Device Manager either. Worse still, I can't even enter bios setup with any ps/2 kb. I managed to do a system restore (using a ps/2 mouse only) but that did nothing to get the kb recognised. Any suggestions?

All help appreciated. Thanks in advance.

[starcraftmaster]

mabye its the thing the ps/2 plug goes into

becasue if the keyboards works on other computers then it must be the mother board or bios

[puntoMX]

I would try an USB keyboard, if it´s a modern PC it will work as well...

[spacesurfer]

perhaps it's disabled in bios. go into bios using a usb keyboard and see if you find an options for using your ps/2 keyboard and enable it.

[GrofLuigi]

If USB keyboards also don't work, try resetting CMOS by pulling the battery out for a couple of minutes or using jumpers, if any.

In the (distant) past, there were cases of PS/2 circuits blowing off if mouse was plugged in keyboard port or vice versa. There were even fuses.

GL

[puntoMX]

There were even fuses.

There still are, also for the USB ports but before the fuse blows more damage has been done (I´ve been there many times before, and it was hard to fix that.)