STEP 1: BE SURE THAT UR MOUSE AND KEY BOARD ARE OK IN ALL CONDITIONS.
STEP 2: BE SURE PS2/USB (ACCORDING TO UR MOUSE+KEY INPUT) MOTHERBOARD SECTION IN UR MOTHER BOARD ARE OK.
STEP 3: IF BOTH STEP 1 AND STEP 2 ARE OK THEN CONSECUTIVE PORT SECTION IN UR MOTHER SECTION MAY BE REQUIRED FOR CHEEP...