Motherboard problem.

[rencomp]

Keyboard is not detected. Same keyboard is working fine on other computer. May be a motherboard problem. Can anyone help me to solve the problem? Being an Electronics Engineer I know something about Electronics parts and repairing.

[Quantax]

Is it a USB type connection? If so, you'd want to check the BIOS to see that it's enabled.

[ski]

If it's a USB KB and the USB controller is enabled in BIOS as suggested by Quantaz, then try a different USB port.
If no luck, then the USB controller may be bad. A work around is to install a USB PCI controller card.

If it's a PS/2 KB, then check the for a fuse near the MB connection. If one is there, then replace it.
If replacing the fuse does not fix it or there's no fuse, then the MB connector may be bad.
If the MB has USB ports, then install a USB KB. But your BIOS will need an item called "USB Legacy Support' so that the KB is operational in an MS-DOS environment and in Safe mode. If that item does not exist, then updating BIOS may solve the problem.