'corrupted bios'?sounds like a corrupted bios i sujest you download a flash to ur usb and flash ur bios.if you cant try opening ur case take everything out take out the batery and clear your cms by moving the clip to the left then power on yes it wont turn on now move the clip back th the right and install ram only do not put battery in until its working well test your system by installing ram fiirst then hardrive turning on system at each peice installed check your bios to see if it loaded reboot turn off and add the next hd or ram if this dont work ill check my diary and see if i had any other events similar to yours