My PC shuts off randomly. At first, I thought it was overheating. It was running at 70+ under heavy stress. So I bought a couple more fans and a new heatsink. Now it's running at 40 C under heavy stress, but just shut down again.
It's my first build I completed in June. I bought the CPU, motherboard, and RAM used from a friend. The shutting down problem has only started happening within the past month. Before that, the only problem it has is it takes a few seconds before booting up. It will click, but nothing else, then it will beep and start up. While starting up Windows, it will occasionally freeze and I will have to reset it and try again. It also froze upon waking up from sleep or hibernation, so I just turned that feature off so it never sleeps. I just turn it off if I'm not using it.
I ran Chkdsk last night; no errors reported. I ran Prime95 for the whole night; no errors reported this morning. I just ran Memtest86; no errors reported. After Memtest, I came into Windows to Google around some more and the PC shut down on me again. It usually does it under stress, like while playing a game, but it has happened a couple times in Windows.
When it shuts down, it turns completely off. No BSOD, no restart, nothing. I have to push the power button to start it up again.
I have no idea what's going on.
Windows 7 Ultimate
Gigabyte EP45-UD3P Mobo
Intel Core2Duo E8500 3.16 GHz
4 GHz RAM
GeForce GTX 550Ti
Corsair 650W PSU
It's my first build I completed in June. I bought the CPU, motherboard, and RAM used from a friend. The shutting down problem has only started happening within the past month. Before that, the only problem it has is it takes a few seconds before booting up. It will click, but nothing else, then it will beep and start up. While starting up Windows, it will occasionally freeze and I will have to reset it and try again. It also froze upon waking up from sleep or hibernation, so I just turned that feature off so it never sleeps. I just turn it off if I'm not using it.
I ran Chkdsk last night; no errors reported. I ran Prime95 for the whole night; no errors reported this morning. I just ran Memtest86; no errors reported. After Memtest, I came into Windows to Google around some more and the PC shut down on me again. It usually does it under stress, like while playing a game, but it has happened a couple times in Windows.
When it shuts down, it turns completely off. No BSOD, no restart, nothing. I have to push the power button to start it up again.
I have no idea what's going on.
Windows 7 Ultimate
Gigabyte EP45-UD3P Mobo
Intel Core2Duo E8500 3.16 GHz
4 GHz RAM
GeForce GTX 550Ti
Corsair 650W PSU