Frequent Power down with Warm CPU

MHJMCJ

Commendable
Jul 28, 2016
2
0
1,510
Build: (about a year old)
*AZZA CSAZ-206S Black SECC ATX Mid Tower Computer Case
*ASRock 990FX Extreme6 AM3+ Northbridge: AMD 990FX Southbridge: AMD SB950 SATA 6Gb/s USB 3.0 ATX AMD Motherboard
*AMD FX-9370 Vishera 4.4GHz Socket AM3+ 220W 8-Core Desktop Processor - Black Edition FD9370FHHKWOX with Liquid Cooling Kit
*CORSAIR Vengeance 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model CMZ8GX3M2A1600C9B
*SAMSUNG 850 EVO 2.5" 250GB SATA III 3-D Vertical Internal Solid State Drive (SSD) MZ-75E250B/AM
*WD Blue 1TB Desktop Hard Disk Drive - 7200 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD10EZEX
*Thermaltake SMART M Series SP-850M 850W ATX12V / EPS12V SLI Certified CrossFire Certified 80 PLUS BRONZE Certified Modular Active PFC Power Supply
*MSI GeForce GTX 960 DirectX 12 GTX 960 2GD5 2GB 128-Bit GDDR5 HDCP Ready SLI Support ATX Video Card

My system, which has been working well for a bit over a year, suddenly started powering down for no apparent reason. If completely cold, it may take 3 minutes to power down. On immediate restart it will power down in about 30 seconds. I managed to look at the voltages and they seem fine. The CPU temp reports 80+ C. The case and fans (including the radiator) are clean with little or no accumulated dust. I guess I am a little suspicious of the CPU cooler and power supply but both should be capable (and are reasonably expensive). Any suggestions on how to trouble shoot or fix this? Thanks!

 
Solution
That sounds like your CPU fan is defective and your CPU is rapidly overheating.

See if you have a spare CPU fan or one you can borrow to test if this is the problem before you melt your CPU.

Syftelurth

Honorable
Jan 18, 2014
27
0
10,540
That sounds like your CPU fan is defective and your CPU is rapidly overheating.

See if you have a spare CPU fan or one you can borrow to test if this is the problem before you melt your CPU.
 
Solution

MHJMCJ

Commendable
Jul 28, 2016
2
0
1,510
Spoke with great customer support at Cooler Master (OEM for the liquid cooler) who suggested feeling the cooler "head" for vibration - did so and it was completely still. That seems to be the trouble. Working on a replacement now. Thanks.