Hello, My computer has been shutting down suddenly recently. I have checked the hardware devices and they are still working properly and the PSU is not overheating.
Has ANYONE encountered the same situation as me? Thanks!If a cooling fan doesn't spin freely and its expected to spin a system will just shutdown completely abruptly to protect itself from thermal failure. I'd TURN the computer on and make sure all cooling fans operate as they should and without any groaning from bearing failure.

Other thing that can cause a system to shut down fast like that is if the CPU exceeds the shutdown temperature which on some systems is 80-90C and is set up in BIOS on some systems as adjustable. You might need to RUN a program like speedfan to see the temperature of the CPU and GPU. Some BIOS's have a real time thermal display when idle that can be looked at to see if its running hotter than it should without a load of a software program running.

Dirty power is other cause of system shutting off, such as the power drops out quickly and COMES back but the system dropped below critical voltage to remaining on.Open the case and look for all fans if they are spinning. With case open start the pc and wait if it shutdown again (sometimes it can cool itself with one side removed). You can also check the temperature of the cpu by hand-just quickly touch the cooler close to cpu unit (carefully though...) You can also test running with another psu unit (despite being ok-you just can't see all the stuff in there).