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This board seems very clean and no liquide damage. If I disconnect hard drive it power and blinking folder appear and it keeps on. BUT
If I connect USB drive or Hard drive to usb it start loading and power off in 12-14 seg.
Any suspect?
Try another BIOS(save the old!!), but besides that it is probably a time waster. Could look around CPU power supple too for corrosion or knocked off parts.