Okay people, I officially give up. The time has come to seek outside help. I have a little soldier of a desktop computer, about three years old, good enough for my purposes, and its starting to act hinky on me. The worst part is that the problem is intermittent.
I will turn on or restart the computer, and the splash screen comes on and Windows starts to load. At some point during that process, the spinning “hold on a sec” graphic stops spinning, and computer promptly goes into sleep mode. I call it sleep, because when I move the mouse, things come back on momentarily. Then, almost as quickly as things come on, the display stops getting a signal despite the fans still going and the hard drive light still chugging. I’ll then turn off the computer by holding down the power button and restart.
When I do this, the computer powers back on, but I still get a dark screen. I have to unplug the computer to get it to work. Occasionally, while rebooting over and over again to play with the BIOS or what have you, Windows loads without any problem. I have already completely changed the operating system by doing a clean install of Windows 10 over Windows 7. The problems persists. I’ve even re-installed Windows 10.
Things I have checked:
HDD: SMART says it’s fine, and so does the check disk utility.
RAM: Memtest86+ found no problems and neither did the Windows memory diagnostic tool.
CPU: Not heating up. Computer doesn’t act funny when it loads Windows 10. It only acts funny on startup.
But it’s gotta be hardware… right? Right? Can it be a bad motherboard and still turn on?