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fx 8320 starting with only four cores MY Last HOPE - Page 3

post #21 of 40
Quote:
Originally Posted by Johan45 View Post

It's still helful to know the brand and model of the PSU. If it's a multirail it may be overdrawn. It's easy just tell us.

It's in the OP. Corsair VS550.
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post #22 of 40
Thanks exxoon, it doesn't look to me like that would be the problem unless he had both the CPU and GPU heavily OC'd.
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post #23 of 40
Quote:
Originally Posted by Johan45 View Post

Thanks exxoon, it doesn't look to me like that would be the problem unless he had both the CPU and GPU heavily OC'd.

Agreed, my guess is the board's VRMs can't handle the power required for the 8320 and the 7850 through the PCI-E slot.
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post #24 of 40
Go to MSCONFIG, then the "Boot" tab, then click "Advanced options..." and make sure that "Number of processors" is unchecked. If it is set to 4 then Windows will only recognize 4 CPU threads.
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post #25 of 40
Thread Starter 
Quote:
Originally Posted by eXXon View Post


It would seem the PSU is not delivering enough power for the 7850 and 8320 with Turbo enabled.

Although the VS series is an entry-level unit (quality wise), your system isn't pulling more than 350w when under full load to stress the PSU.


EDIT: I see your mobo has an onboard GPU, can you remove the 7850, connect the monitor to the iGPU, enable Turbo and check your 8320 then?
I already tried it but no luck
post #26 of 40
Quote:
Originally Posted by Dopamin3 View Post

Go to MSCONFIG, then the "Boot" tab, then click "Advanced options..." and make sure that "Number of processors" is unchecked. If it is set to 4 then Windows will only recognize 4 CPU threads.

That's worth a shot I guess. It seems strange that would change after an OS crash though.
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post #27 of 40
Thread Starter 
Quote:
Originally Posted by Dopamin3 View Post

Go to MSCONFIG, then the "Boot" tab, then click "Advanced options..." and make sure that "Number of processors" is unchecked. If it is set to 4 then Windows will only recognize 4 CPU threads.
I was not able to boot with 8 cores on in windows only how can I check that even if is an os problem I should able to format my pc it is also restarting there but stii I checked the numes of processor is unchecked when I booted using four cores and it has an option to eanbles four cores only
post #28 of 40
Leave it unchecked.
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post #29 of 40
Thread Starter 
Quote:
Originally Posted by Johan45 View Post

Thanks exxoon, it doesn't look to me like that would be the problem unless he had both the CPU and GPU heavily OC'd.
they all are running on the default setting just turbo boost diabled and 12vrail of my psu is rated to supply almost 510watts I think fx 8320 and hd 7850 will touch their maximum tdps under stock settings
post #30 of 40
Thread Starter 
Quote:
Originally Posted by Johan45 View Post

Leave it unchecked.
no I am talking that I checked whether it is unchecked or not
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