My build: Antec 300 Black Illusion (4 fans)ATX Mid Tower Biostar TA790GXB3 AM3 AMD 790GX ATX Motherboard G. Skill Ripjaws Series 4GB 240-pin DDR3 SDRAM DDR3 1333 (PC3 10666) AMD Phenom II X4 955 Black Edition Deneb 3.2 Ghz 4 x 512KB L2 Cache 6MB L3 Cache AM3 125W Western Digital 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Asus DVD Burner 5.25” Antec Earthwatt 500W Continuous PSU
- No cross firing - No over clocking - no RAID - no sound card - no video card
My problem: Random shutdowns with no error messages and no warnings I've been using system since 5/2010 without complaints, but 4 months ago my PC turned off after 3 hour of use, and from then, started to shutdown randomly without any pattern. Sometimes I'm away from the system when it shuts down. It does it most consistently when I open two browsers using Flash for online games. First I ran MEMTEST+86 to check the memory sticks and everything was fine after 6 tests.
I tried to use Prime95 In-Place test to measure CPU temperature, but system shutdown less than 1 minute into test. Not sure about the results – found 2 new text files: Prime: V24OptionsConverted=1 WGUID_version=2 StressTester=1 UsePrimenet=0 MinTortureFFT=128 MaxTortureFFT=1024 TortureMem=8 TortureTime=15
And Local: OldCpuSpeed=3520 ComputerGUID=d55212b32a8d1f59f0614d05d1f7d845
Anywhere to find performance info. in PC? Should I just replace the thermal compound in the CPU? Is the motherboard the problem? Could it still be the power supply?
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More aboutrandom shutdown problem
i suuspect hight temps on CPU
Often times this is a power supply issue, however it sounds like your CPU is overheating and the system is shutting down to prevent damage. Download the program RealTempGT and monitor your temps and report back.