PC Shuts Down Randomly

[teknology9]

Hello All,

I am using a Z77X-UD5 and when I have set everything up on the test bench it functions for a while then the power cuts out. I have the following specification:

Z77X-UD5 MB with F14 BIOS
Corsair HX750 PSU
I5 3550 with Intel stock fan
Sapphire 7850 2G OC
Samsung 830 SSD
Samsung DVD
8 Gb of Mushkin 1333

The power setting in Windows 7 is performance

I have reseated the CPU,GPU,RAM - no change.

I am trying to install Windows 8.1 but it just cuts out, can anybody suggest any solutions?

Cheers,
Teknology9

[shadowsports]

Random thoughts...   Power, heat or damaged components?

Test PSU (is it stable)
Something is getting too hot  (CPU, chipset)
Or you have a bulging capacitor that you might not have noticed (something hidden) 

[teknology9]

Hi,
Thanks for the reply. I've fixed it, the stock cooler wasn't attached correctly so it must have been overheating.

I am also checking for updates for Windows 8.1 64 bit and it seems to be taking ages for them to come through, any ideas?
Update: reconfigured the settings in the OS, all updates are installed
Cheers,

Teknology9