so my friend asked me for assistance today. in short- the computer won't turn on. in long- on Sunday, she was on her computer, then a burning smell started, but it didn't smell like it originated from the computer. upon taking about 20-30 minutes of trying to track down the burning smell around the house, couldn't locate the source of smell. come back to the computer, it was turned off automatically. (i'm assuming the computer shut itself off due to a high CPU temp?) now, when you try to turn it, a light flashes once on the case, the case fan and CPU fan twitch, and nothing else happens. here's what i've tried: * unplugged everything from the motherboard. then plug it all back in. * unplugged the cable from power supply to wall, and back in. * flipped the power supply switch on and off. * removed video card, tried to boot- nothing. * removed RAM, tried to boot- nothing. * removed CPU fan, the AMD processor looks fine. could use a new heat sink and fan. * removed CMOS battery, inserted backwards, removed again, and then inserted correctly. computer information: * board - ASUS M4A78T-E ASUS - Motherboards- ASUS M4A78T-E * processor - AMD AM3 socket * RAM - 4GB DDR3 (2x2GB) * video card - ATI Radeon right now, i'm thinking to test the power supply. since even the case fan won't start up? if that doesn't work. i'm thinking it's either the motherboard or processor? let me know what you think, thanks!