For some time now it seems my PC will restart itself after getting to the Login screen for Windows 7. It only does this on a fresh startup after being off for some time. I boot up, get to the login screen, login, and then it starts to load and then just restarts itself. Usually the second time it works just fine. It never restarts itself or BSODs or anything after that. Any ideas?
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It could be just about anything related to a faulty hardware device or failing to some extent. It's a tough Question to answer, perhaps you could boot up to BIOS and check the PC temps, leave it for about 10 minutes and check again.