Was me, I bumped a power cord. HiTEch
its a video problem (display) you might have to open it up, the video card is most likely bad, you should of been able to hook up a external monitor and seen something if the video card was working.
he cant get into the BIOS. he cant see anything the screen is dead, no picture, he can flash the CMOS but he has to open it up to cross the pins.