Keeps shutting down

[miguel2144386]

My pc build is:
amd fx8350 - 4.0ghz
Msi 970a g46
16gb Patriot ram
Corsair 750w 2017 psu
Evga gtx 670 2gb
Corsair h80

Okay so recently my pc had been shutting off while I would be using it not even gaming just basic use. It kept turning off and the time it stayed on got shorter and shorter til the point it wouldn't turn on anymore. I thought it was psu issue replaced it and turned on just fine but shut down a few mins later. I haven't overclocked and when I go into bios notice that cpu temp is reaching up to 90 degrees c and when turning pc on the phase lights flash before turning completely off and booting pc. Not really sure what to do any help?

 

[jankerson]

Remove the Graphics card and see if it will stay on.

 

[miguel2144386]

Remove the Graphics card and see if it will stay on.

Still same problem

 

[jankerson]

Adjust you CPU cooler, the CPU is overheating.

Remove and apply new thermal paste.

You cooler might be going bad.

90C is not good.

If it still overheating replace the cooler.

 

[miguel2144386]

Adjust you CPU cooler, the CPU is overheating.

Remove and apply new thermal paste.

You cooler might be going bad.

90C is not good.

If it still overheating replace the cooler.

Replaced thermal paste and same problem still at first it was at 40C then started climbing quickly to 90C

 

[jankerson]

Replace the cooler.

 

[miguel2144386]

Replace the cooler.

Thanks replaced it with noctua NH-D15 and phase lights all on and hasn't shut off and cpu Temps under 30C.