My Gateway GT5678 has recently stopped booting up. It turns on, then shortly after beeps once followed by two quick short beeps. According to the gateway error codes this indicates a video card failure. The strange thins is once out every 15-20 or so startup attempts it will start fine. I have tried reseating the video card and have tried taking the video card out and using the other vga output and no luck. Any help would be appreciated. Thanks. -J
I had similar Gateway PC with similar problem dumped by my wife's cousin who left for college. First time it was HDD, so I replaced it. Then it was Video card, so replaced. Then finally, I figured out it was PSU, then dumped it to a local recycle center, after pulling off CPU, memory, HDD, ODD, etc., some of which were sold on ebay.
Anyhow, to identify root cause, you need to have a working PC on hand so that you can swap components until isolate a real culprit. Then you can replace the component, or like I did, sell all other healthy components on ebay, and build a new system.