check the power supply first, memory. cmos battery. check for 3.3, 5 and 12 voltz on board, flash or replace bios chip. look for burnt components, things like that..
there is some coil around the dc jack check those. 3, 5 12 voltz you have find on board.. need a diagram for your mainboard.. i hope someone can give you a hand, i'm not that good when it comes to board..
first of all, find a dump and flash your bios. what is the model of your mother board ? lets find the schematics. then we will maintenence on your board.
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