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Discussion Starter · #1 ·
Hi everyone, I just got a ga-h55-s2 and a i3 540 from a friend . I paired it with a 120 gb ssd and 8 gb ram. When i oc the processor in games and other intensive video aplications the computer freezes and it starts to emit strange noises on the speaker (something like an old phone internet modem) at this point it cannot be shutdown from the on/off button I have to hit the psu on/off switch. I have locked the pcie to 100 made all the bios settings (this is not my first oc or first build !) I have tested the cpu for stability and it is stable ( 4ghz no vcore) I have heard of people that have experinced stability issues from test to real world applications so i upped the vcore to 1.4 but still the same issue. The problem is not the psu since I have a good 700W one and I tried replacind the gpu from the curent 4870 to a very low power 3650 and the same issue appears. When i turn off the oc the crashing issue disappears.

On top of the first issue I found out that the pc cannot be shutdown, from windows comand ( Ater i issue shutdown from windows it turns the video signal off and there it stays. I havve to press the on/off button for it to shutdown) this is not a win 7 issue as i checkt , also the i "done" all the bios setting that coud affect this problem and nothing. This problem does not depend on the oc.
Is there anything that can be done other that replacing the mobo? ( since it is an old one i am considering a full cpu+ mobo update)
 

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Its an unstable overclock. You said you tested it for stability, how did you do it?
 

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Discussion Starter · #3 ·
I tested it with prime95 six hours and IntelBurnTest with no problems . The same issue also appears at 3.5 clock !
 

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Quote:
Originally Posted by powerdown View Post

I tested it with prime95 six hours and IntelBurnTest with no problems . The same issue also appears at 3.5 clock !
What setting was IBT on?
Unless it was on Very High or Max and ran 10-20 passes then you can't be sure.

Try letting the mobo adjust the VCore, set your VCore to Auto or Normal, whatever your mobo has. Then retest and record what voltage it's using, you can either accept it or lower the voltage by small increments until it's unstable so you know your lowest functional voltage.
Gl
smile.gif


Btw, don't waste time using Prime95 for long hours until you can pass Very high or Max on IBT, which will stress it further and heat it up more so you know for sure.
 

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Run a memtest and be sure that you ram is running fine, if you haven't already. Run a gpu stress test like kombuster to see if it is just a specific game or setting. Try out all the settings dx9/10 with aa without aa etc. Run IBT for 10-20 passes see what that nets you. Try running the entire system with a cmos reset and see what happens bone stock.

Post back when you have done some further testing. Anything else you can give us will help. Normally the clarks are good clocking duals and net 4.5ghz on decent voltage so something seems amiss.

Edit: Reading your post again I am wondering if you have a bad pcie slot. Hard to tell as of now though.
 

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Discussion Starter · #6 ·
I run IBT for 15 passes successfully. If i set vcore tu auto cpu-z reads 1.45 witch is rong for 4ghz on a 540 and i get same problem with games. The only thing that seems to affect this issue is PCIE CLOCK DRIVE , if i set it to the normal 700 mv games freeze at start , if a set it to 900 - 1000 i get a few minutes of gameplay before crashing. There seems to be a connection between the hight blk 174 and the pcie slot although i have manualy locked the pcie to 100.
 

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Overclocking on auto is not recommended. The CPU always sets the voltages way higher than needed.
 
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