BIOS PROBLEMS,PS2 IS NOT DETECTED,DVD DRIVE IS NOT IN DEVICE MANAGER & MY COMPUTER

INTEL MOTHERBOARD WHEN PS2 KEYBOARD IS INSERTED IT HANGS COMPLETELY,ONLY USB CAN BE USED .DVD WRITER SAMSUNG IS NOT DETECTED IN DEVICE MANAGER AND NOT VISIBLE IN MYCOMPUTER.
WE ARE SUFFERING FORM SERIOUS PROBLEM BECUASE OF THE LATEST VIRUSES.HARDWARE ERRORS HARDWARE NOT DETECTING,BIOS PROBLEMS WE NEED SOLUTIONS.