Motherboard Checking..

To check motherboard we have to take following steps:

1. Check motherboard for cracks on account of overheating of equipment.
2. Physically observe any scratches or discontinuity in PCB(Printed Circuit Board) path.
3. Check for burnt ICs or component.
4. Check the VGA connector for dry soldering or loose connection or replace the connector.
5. Check North Bridge and South Bridge ICs physically for loose connection or dry soldering.
6. Check north and south bridge IC whether they are getting heated by putting your index finger on them.
7. Check the processor whether it is gradually heating up or not by putting your index finger on top of the processor.
8. If the processor is cool then check the voltage regulator ICs whether short or open or measuring  voltage across the leads using multimeter in diode mode.
9. Update BIOS from motherboard driver CD or you can download from the Internet.
10. Replace BIOS and check.
11. Use the debugging card to know the source of the problem.