I was just playing Oblivion, and suddenly it froze up. I couldn't exit out or open the task manager, so I manually restarted with the button. I tried playing oblivion again, but when it started the computer restarted again. Now, whenever I turn the computer on, it loads up windows, but come the welcome screen, a blue error message that I can't read quickly flashes up and the computer restarts. It wouldn't work on Integrated graphics either, so it's not the GPU. The computer worked flawlessly before this. What happened?
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Heat can be an issue so could the PSU and RAM. If you got another computer, download memtest 86 and give that a run for a while and see if you get any errors. If you do, you have bad RAM. Before you do that though, try swapping out the PSU with another working one.
Go to System Properties, click the "Advanced " tab, and go to Startup and Recovery and click on Settings then unclick Automatically restart and the next time your computer restarts because you have a problem it will stop at the blue sceen and you can read and see what caused it to restart and fix it.
I was going to do what ian elliot said to do, but it actually started up normally. The desktop came up, then a "send or don't send" message came up saying that windows explorer encountered a problem and needs to close. It closed, and I restarted. Two error messages came up that I was able to read and write down:
1st: services.exe - Entry Point Not Found
The procedure entry point Dloor could not be located in the dynamic link library msvcrt.dll.
2nd: Winlogon.exe - Application error
The instruction at "ox7c81f9e7" referenced memory at "0x54801010" The memory could not be "read".