I have an all in one Desktop. I bought it since around 1.5 years. The screen was flashing from time to time without concern from my side. These black outs of the screen was not frequent lately but suddenly around two weeks ago I got black and never returned. I tried this BIOS reset discribed on hp web site three times without any sucess. I got it to Future Shop but a stupid technician said the motherboard is done. So I asked him for estimate but he never got back to me. I went got my computer from Future Shop because the computer was working when I give it to them. I hear the computer start up and I enter the password it loads. I was able to make the Microsoft media to play by using the remote. So I know the motherboard is fine. I got the computer back and connected to an extra screen that I used it before as extra display but using an external graphic card connected to the computer through USB. When I connect this screen with the computer it display as extended screen as I did setup it for that. I start the computer I tried to make this screen as the primary sceen and I successeded. Now I have this huge computer screen black in front of me and the display is working on the extra screen through the external graphic card.
My question is now: Is this a screen problem or a graphic card problem? How expensive it could be to repair such problem? If the graphic card in this all in one is defective. Do I need to change all the motherboard?