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Sandy Bridge unstable after bios flash [solved]

post #1 of 5
Thread Starter 
Hi all, i had to flash my EVGA Z68 SLi motherboard earlier in my other PC after cleaning it out.

Now that i fixed it, i noticed no CPU overclocks are stable now... which used to be rock solid...

I tried 4.0ghz at 1.2v, BSOD on startup.
I tried 4.5ghz at 1.3v BSOD on startup.

I also found in the bios the voltage for 12v is at 11.808v, sometimes occasionally dropping to 11.75v


I am really worried that the PSU is dying....

It is a Silverstone Strider ST1000-G it has never been used close to it's full peak either.


Is this just a bad reading and the bios is causing instability, or is the PSU really giving up?


I did notice that through GPU-Z the GPU is getting well over 12v...


Here is a screen cap from GPU-Z.





I would also like to note, before taking the machine to bits, it was working handsomely without issues.

The PSU i did take apart, but only as far as removing the fan to get the dust out, i have done it with all PSU's i have owned and never broken one, the PSU was also not left lying about in bits either, it was a straight job.

The bios before flashing was corrupt, this is also worth noting, other than what i have typed, i am stumped and worried.


Any help is much appreciated all.
Edited by amd655 - 8/6/13 at 3:00am
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post #2 of 5
Thread Starter 
Here is images of my bios screen, 1st shows the sagging 12v, the second shows the OC i tried to apply (4500mhz)

I will also note, this bios is still new to me, it has more features vs the old one, but i only flashed because the old one became visually corrupt some how.


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post #3 of 5
Thread Starter 
Nothing at all?

frown.gif
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post #4 of 5
Thread Starter 
Ok, i know software readings are not always accurate, but out of curiosity, i downloaded OCCT, and the voltages all read normal.





Wouldn't the bios be more accurate?
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post #5 of 5
Thread Starter 
Ok, regardless of voltage readings, i decided to change a few things around.

This time i selected the overclock with ELEET (ELEET compatible OC)
And i enabled Vdroop, i am now in the OS stable so far.


With the old bios, Vdroop would cause vcore to sag under load .
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