Starts Windows then powers down, temps reasonable

[geckyl]

Unlocked third and fourth core Win 7 64 starts up and everything is fine. Temps idle around 100F with stock HSF. Computer powers down suddenly with no increase in temp apparently. Looking for help and advice. I understand that my equipment (except CPU) is not listed as good for unlocking or overclocking in the guides on this site. I have read several. I'm looking for tips like disabling spread spectrum and using ACC functions. I have tried running as a triple core or quad and Windows starts up and runs fine but then shuts down within minutes or after 30 minutes or so depending on how hard I push the system (gaming). I have also reduced the multiplier on the cores to 3 GHz and it seems to not crash as quickly. Runs fine at 100F as dual core overclocked to 4 GHZ with stock HSF. Any help here?

 

ASRock 880GM-LE AM3 Micro ATX Motherboard

2600MHz Hyper Transport (5200 MT/s)

Phenom II X6 6-Core CPU Ready

AMD OverDrive with ACC

Dual Channel DDR3 1800(OC)

 

Mushkin Enhanced Essentials 4GB (2 x 2GB) 240-Pin DDR3

SDRAM DDR3 1333 (PC3 10666)

 

AMD Phenom II X2 560 Black Edition Callisto 3.3GHz

with Stock Heatsink

 

HIS Radeon HD 4670 1GB 128-bit DDR3 PCI Express 2.0 x16

 

Antec EarthWatts Green EA-380D Green 380W Continuous

power ATX12V v2.3 / EPS12V 80 PLUS BRONZE Certified Active

 

PFCPower Supply

+3.3V@20A

+5V@20A

+12V1@17A

+12V2@15A

[email protected]

[email protected]

 

Windows 7 Ultimate 64

Edited May 23, 2011 by geckyl

[IVIYTH0S]

maybe try the voltage up a little, it's possible that the other cores are unstable at any amount of voltage (also watch the temperatures while you bump voltage)