PC randomly shuts down

[Nyraion]

So I built a new PC & it boots fine but it randomly shuts down

I pass the POST test and sometimes can boot into windows

 

Specs:

PSU: Corsair CX 750M (750 w) Brand new)

GPU: GTX 960 4Gb MSI (Brand new)

CPU: FX-6300 3.6 GHz (Used)

Mobo: GA-78LMT-USB3 (Used & damaged. The USB 3.0 internal has 2 broken pins. possibly other damage)

RAM: 18 Gb Balistix sport 4x4

Primary SATA HDD: WD Blue 500 GB

Secondary SATA HH D: WD Blue 1 TB

[RicHaj]

Im sorry to say but with your motherboard being one that might have ''possibly other damage" to it, it becomes nearly impossible to troubleshoot it much beyond saying "maybe its your motherboard".

 

Did it ever fully booted up fine?

[Nyraion]

Just now it has, but the OS is in czech & does not boot beyond that

[Citadelen]

So, you can be using it normally and then it will shut off seemingly random? Or is it shutting off while booting?

[Kolden]

wipe your hard drive and reinstall the operating system under english, check your bios for temperatures, and if you havent already take off your heatsink and clean and reapply thermal paste. 

[Nyraion]

It is on the booting stage and it shuts off at random. The system POSTs fine, but i have been in windows only 1. The thermal paste is new on the heatsink. In the morning the PC was working fine, just with a different amount of RAM, a diff GPU, and a diff PSU. I cant get into bios most of the time because it shuts of usually before I can

[Nyraion]

Just checked BIOS the CPU temp slowly rises up. re applying Paste and if not using stock cooler