defective cpu?or defective oprator?

[Phantom martin]

HELP!!(please)
Just built this rig before christmas...ran ok for a while..did an auto overclock..Bam! core 3 shut down.
Now it keeps freezing up on factory settings and always shuts down core 3 after trying to overclock!
Ran prime 95 overnight,as well as memtest..both came up as a pass..
also ran OCCT,and that said it was ok too.
All temperatures are below 42 degrees,and i only play bf2 bc and browse really,but it still keeps freezing up!Somebody save me please

HIS ATI Radeon HD 5850 iCooler V Turbo 1024MB GDDR5 PCI-Express

AMD Phenom II X6 Six Core 1090T Black Edition 3.20GHz (Socket AM3)

Asus Crosshair IV Formula AMD 890FX (Socket AM3) DDR3 Motherboard

NZXT Phantom Enthusiast Full Tower Case - Black

Corsair HX 750W ATX Modular SLI Compliant Power Supply (CMPSU-750HXUK)

G.Skill RipJaw 4GB (2x2GB) DDR3 PC3-12800C9 1600MHz Dual Channel Kit
Western Digital Caviar Black 1TB SATA 6Gb/s 64MB Cache - OEM

Corsair A70 High-Performance Dual Fan CPU Cooler (Socket AM2/AM3/LGA775/

Samsung SH-B123L/RSBP 12x BD-ROM / 16x DVD Writer Drive

 

[Hagar]

Sounds like the voltage is a touch low on idle if it primes OK.

You really should overclock in the bios rather than using auto. Look at Vcore and raise it one notch and try again.

andy.

 

[Phantom martin]

Thanks andy, will do that and try again

 

[davieg]

The auto clock software in turbo v for the crosshair is meant to be ran a few times also, it should do itself again after stability becomes an issue, and then another couple of times on top. Do agree doing it in BIOS is best way but for ease the Turbo V stuff is pretty useful, also you can tweak the voltages slightly in turbo v and save it direct to Bios too. Its not a bad starting point.
Does sound like your a little low on volts so wouldnt say anything is defective. There are 2 different auto overclock ways also with the board the OS Turbo V software and also an auto overclock facility in BIOS,
Another suggestion is to use the CPU lvl up option in the crosshair BIOS, make sure you have the very latest BIOS as it wasnt very well supported before the very latest bios. Has an option to go to 3.7 and 3.9 both stable nicely on lower volts than before so looks like the new bios has added to stability.

Take care,

Dave.