keyboard error or no keyboard present

[coshe06]

Hi to all! I'm a newbie here. I just want to ask about problems regarding this ECS P4VXAS2 and it doesn't recognize any keyboard. can you help me please...I've checked every lines from the Ps2 connector and they were fine. i also checked the capacitors for any burnt but most were ok. please guide me to repair the motherboard...Thanks

[mjc]

i also checked the capacitors for any burnt but most were ok. please guide me to repair the motherboard...Thanks

Most were okay?

That implies some weren't...if there are any bad capacitors, the entire board is suspect an not trustworthy...it is a rather old board, that is from the middle of the 'bad caps' era...

[coshe06]

can i ask for some board parts identification? my friend told me that it's the keyboard controller ic but i could not locate it. can you give an example of a board keyboard controller in an ECS board?

[Sylvander]

Is there no keyboard displayed in Windows Device Manager?

My PS2 keyboard is listed as a PCI device [as in screenshot below], and I guess yours [if it was functional] would be also...
And all PCI devices [includes your mouse] are likely to be detected and configured by the PnP BIOS at startup [allocated resources, otherwise they may not be seen within Windows, and therefore not functional].

With some BIOS's you can manually Force Update the ESCD (http://www.techarp.com/showfreebog.aspx?lang=0&bogno=92) [PnP/PCI Configuration->Reset Configuration Data = Enabled, then Save & Exit Setup] to make the BIOS re-detect all the connected hardware, make new non-conflicting resource allocations, save those in the ESCD, then disable further detections until manually enabled once more.

If the above was last done with no keyboard connected, then it's possible no resources have been allocated [in the ESCD] for any keyboard, and therefore no keyboard would be enabled/initialized, and therefore not functional and not seen as operational by any OS [BIOS or Windows]

One way to check would be to load a Linux distro from a bootable optical disk...
Then see if the mouse is functional or not.
If it isn't, you know it isn't a Windows problem, but more fundamental than that; either hardware or BIOS.
.