Random PC Shut downs..Default Bios doesn't load windows at all..

[renlen00]

Hi Guys,

My config:

Amd Fx 8350 (Automatic OC to 4.2)
Msi 970 Gaming Motherboard
Sapphire Tri X R9 290
16 GB 2133 Mhz GSkill Trident
Crucial SSD 250GB B100 (Primary)
Western Digital Black 1TB (Secondary)
Cooler Master V 750W Gold Series PSU
Noctua NH-U14S Slim U-Series Single Tower CPU Processor Cooler
Noctua 140mm NF-A15-PWM Fan (Push-Pull Config)
Enthoo Pro Case with 7 Fans all Corsair AIr Series

Kindly excuse me for long explanation.

This was my first assembled PC about 12 months back. Initially I had luckily overclocked it till 4.3, manually but since it was my first time didnt go further and reverted to using OC Genie for automatic overclocking to 4.2 Ghz and only thing I changed was DRAM frequency value from default 1600 to 2133 Mhz.

The system ran very successfully until 3 days back while watching a youtube video it just shut down randomly. I thought maybe it a software issue and booted the system and it went fine. The next day it shutdown again , I tried rebooting but OS didnt load and it shutdown. Only on the 3rd try it started but only ran for like 10 mints hardly.

To be frank I didnt know what was the reason. I went through the forums and googled and tried out the below mentioned things:

Completely Cleaned the entire PC from Dust.
Removed CMOS Battery Shorted and installed back
Installed a completely new OS after full format and DOS Clean (Win 8.1 Pro)
Checked the temp using HW Monitor and CPU Z
Removed RAM and installed again

No Use it stays ON for like 30 mints and shut down and if I try rebooting it shuts down at windows login screen. But can stay infinitely on BIOS Screen.

If I switch on like after 10 mints then it will boot and hardly stay on for 5 mints.


The Temps which I get for CPU on medium load is like 28 - 34C and Graphics Card is like 40-44C idle. All Fans on 40%-50% output.

I read many people saying about the PSU. My PSU is running fine I guess (or at-least I thought till). Just now I switched off overclock (OC Genie) and set the DRAM values to default 1600 MHZ. And when restarted the windows doesn't even load and if I use the overclock again then it loads but runs for few mints and shuts down.

Which is strange, its like default doesn't load but overclock loads for few minutes.

I have no idea what is happening? Any help would be really appreciated.

Thanks

[Bonebreaker777]

I would suspect the motherboard. Definitely something is not right..maybe some VRMs are on the way out or dead already and the rest just can't keep the CPU afloat.
I think.