For all other fans in the computer, you need to open the computer and verify all fans are working (e.g., processor fan, video card fan, and case fans).
A temperature gun, like the one shown in the picture, can also be used to help gauge how hot the hardware components or integrated circuits are inside the computer.
If you have updated drivers and removed any hardware that could be causing this issue and the random reboots continue to occur, it's possible that the memory is bad in the computer.
Finally, hardware devices that are not installed properly in the computer can also cause random reboots.
Some computer viruses, such as the blaster virus, are designed to reboot your computer without warning.
Usually these viruses make the computer reboot every 5, 10, 15 or 30 minutes after the computer has started up.
You’ll still get the prompt, but it won’t force you to shut down.
To help determine if this is the case, try the steps below.
If the computer does not reboot after idling in CMOS and you have tried the other solutions on this page, you can try activating a previous restore point in Windows before the problem started to occur.
Make sure all the cables and expansion cards are connected properly inside the computer.
The best way to determine this is to disconnect and reconnect all cables and expansion cards.