Quickest way to test a motherboard is to remove the RAM, and boot up. If the motherboard is working, you will hear three beeps. If you don't hear a beep, the motherboard is toast. Far as repairing, it may not be worth it. The motherboard for my Compaq laptop ALONE was $400. I bought a new one with better specs for $600.
Thanks for the reply and suggestion! I tried and i dont hear any beep sound, so i know the problem know.. the motherboad is dead!!!!!!!