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Windows 7: 6th core not working


16 Aug 2012   #1

Microsoft Windows 7 Ultimate 64-bit Service Pack 1
 
 
6th core not working

On a X980 (ES) that works fine with 5 cores(set in BIOS),if configured to 6,boots and crashes right after.The strangest thing is that it works flawless in safe mode.Its about a rig that fell into my hands,so system specs do not correspond.Mobo is a Gigabyte GA-X58A-UD3R with 10 gb of RAM DDR3 1600 PSU 550W.If we solve this problem i am gonna buy it,so its kind of important if it can be done.Any suggestions?



My System SpecsSystem Spec
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16 Aug 2012   #2

Windows 7 Home Premium 64bit sp1
 
 

Question is it overclocked?
My System SpecsSystem Spec
16 Aug 2012   #3

Microsoft Windows 7 Ultimate 64-bit Service Pack 1
 
 

No,its not.Performing like a charm with them 5 ,but as soon as the sixth is enabled, im gettin them skycoloured screens...
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20 Aug 2012   #4

Microsoft Windows 7 Ultimate 64-bit Service Pack 1
 
 

should i consider the silence as a "no deal" advice?
My System SpecsSystem Spec
20 Aug 2012   #5

Windows 7 x64 Ultimate
 
 

Well that's not looking good :/ I'd pass or ask for a big discount and then be happy with 5 cores.

Safe mode may actually limit the processor to a single core.

10 GB is kind of a funny amount of ram. Dual channel would normally be 4, 8, 12, 16, triple channel would be 6, 12, 18, 24. Not that 10 may not be legal for the MB, it's just... odd...

Could maybe try this: If the ram modules are different sizes, lets say it's dual channel and you got 2+2+1 in channel A and 2+2+1 in channel B. Might try taking out the two 1Gigs and see if it runs better with 8 Gig, just in case the memory mismatch is causing problems (Could be different manufacturers and speeds etc)
My System SpecsSystem Spec
20 Aug 2012   #6

Windows 7 Pro. 64/SP-1
 
 

Normally it means nobody has a answer for you. Have you checked if their is a bios update that address that exact problem. I have just got off the phone with my Intel dealer and he stated that Intel has no reported problems using that chip on a Intel board. All 6 cores work. He doesn't install that chip on other brand boards. A bios update might also address that 10 gig of ram.
My System SpecsSystem Spec
21 Aug 2012   #7

Microsoft Windows 7 Ultimate 64-bit Service Pack 1
 
 

An exact pairing of modules did not help.Bios is up to date and detects all six,includes temps,usage etc.Tried to approach msconfig but cant make it because it crashes too fast and safe mode doesnt let me do that.Anyway,i ll better step back on that purchase,better sour than sorry.Thank you everybody for beeing supportive,again.Great to know someone is listening(reading) out there...
My System SpecsSystem Spec
22 Aug 2012   #8

Windows 7 Ultimate x64
 
 

If it's not too late, you might try burning a Linux OS to disc and see if it can utilize all 6 cores. If so it may be a Windows issue rather than a problem with the machine itself. If it responds the same way Windows does then I think you've narrowed it down to the machine itself.
My System SpecsSystem Spec
23 Aug 2012   #9

Microsoft Windows 7 Ultimate 64-bit Service Pack 1
 
 

Smart thinking,already tried with a handy XP disk with no result,should be a machine issue,unless Linux would be a much "closer approach".
My System SpecsSystem Spec
23 Aug 2012   #10

Windows 7 Ultimate x64
 
 

Certainly seems like a machine issue, but was just trying to rule out other potential culprits.

I was going to suggest trying a run of Prime95 but it seems rather pointless if you can't run all 6 cores for any length of time.

May be worth pulling the processor and checking connections. May as well check everything else inside there if you do go in.
My System SpecsSystem Spec
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 6th core not working




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