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Windows Suddenly Hates my Overclock?

post #1 of 12
Thread Starter 
Hey guys, need a bit of help here.

(*specs in signature*)

As of this morning, my system is no longer stable at any overclock. Windows fails to boot and gives me a short BSOD and then shuts down. It's a short flash on the screen then it's gone, so I can't really tell you what the exception was.

But yeah, all this time I've been running a 3.8Ghz OC just fine, not a single hiccup, stall, or anything! It ran like this for darn close to 6 months, ever since I got the computer!

These were my settings:

vCore: 1.125v
Dimm: 1.640v
Multiplier: 24x
Bclck: 160
Memory Ratio: 10.0
V-Droop setting: Standard "Follow Intel Spec" - BIOS
Temp: 33-35°C idle, never above 60°C load (restart temp is set to 60, and no this isn't causing it, because I disabled it and it still failed to boot)


I can give you any other settings if I can remember them, if needbe. I figured those were the most pertinent.

But yeah, no boot with any manual overclock. If I try to adjust anything, windows will load, show me the logo, then give me a .25sec BSOD and then reboot. I did manage to get it to boot ONCE but it never finished - after I logged into Windows, it just froze up.

The best I could do was change from the standard 23x multiplier giving me 3.06Ghz, to 24, giving me 3.2Ghz. Not really that extreme anymore. :/

P.S., when I tried to load Safe Mode, it still rebooted, but I noticed every time it was when it tried to load classpnp.sys. Not sure if this is the cause or merely a symptom.
Thanks for the help guys.
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post #2 of 12
Crashing at the windows logo for me usually means vcore, vtt or memory issues.
If raising the vcore & vtt didn't help I would take a close look at the memory, does it work fine with only 1 module installed? Maybe test each individually.
    
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post #3 of 12
Quote:
Originally Posted by KijanOZ View Post
Hey guys, need a bit of help here.

(*specs in signature*)

As of this morning, my system is no longer stable at any overclock. Windows fails to boot and gives me a short BSOD and then shuts down. It's a short flash on the screen then it's gone, so I can't really tell you what the exception was.

But yeah, all this time I've been running a 3.8Ghz OC just fine, not a single hiccup, stall, or anything! It ran like this for darn close to 6 months, ever since I got the computer!

These were my settings:

vCore: 1.125v
Dimm: 1.640v
Multiplier: 24x
Bclck: 160
Memory Ratio: 10.0
V-Droop setting: Standard "Follow Intel Spec" - BIOS
Temp: 33-35°C idle, never above 60°C load (restart temp is set to 60, and no this isn't causing it, because I disabled it and it still failed to boot)


I can give you any other settings if I can remember them, if needbe. I figured those were the most pertinent.

But yeah, no boot with any manual overclock. If I try to adjust anything, windows will load, show me the logo, then give me a .25sec BSOD and then reboot. I did manage to get it to boot ONCE but it never finished - after I logged into Windows, it just froze up.

The best I could do was change from the standard 23x multiplier giving me 3.06Ghz, to 24, giving me 3.2Ghz. Not really that extreme anymore. :/

P.S., when I tried to load Safe Mode, it still rebooted, but I noticed every time it was when it tried to load classpnp.sys. Not sure if this is the cause or merely a symptom.
Thanks for the help guys.
I had the same problem after a system freeze, checkdisk scan then started a so called scan repair which deleted windows files so i could no longer boot into windows and i was met with a bsod just after the windows logo. I had to reinstall windows to repair this

It sounds like the problem you are having
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post #4 of 12
Which BSOD error you saw?
    
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post #5 of 12
Thread Starter 
Quote:
Originally Posted by FtW 420 View Post
Crashing at the windows logo for me usually means vcore, vtt or memory issues.
If raising the vcore & vtt didn't help I would take a close look at the memory, does it work fine with only 1 module installed? Maybe test each individually.
I've run MemTest on it, and zero memory errors. As I said in my OP, it's been stable for 6 months and now it doesn't work at all. I should note that without any overclock, it runs fine. I'm using it right now
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post #6 of 12
Thread Starter 
Quote:
Originally Posted by bmelf View Post
Which BSOD error you saw?
That's the thing. I couldn't read it, as it was only on the screen for a split second each time before the computer restarted.
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post #7 of 12
Thread Starter 
Quote:
Originally Posted by Chewy View Post
I had the same problem after a system freeze, checkdisk scan then started a so called scan repair which deleted windows files so i could no longer boot into windows and i was met with a bsod just after the windows logo. I had to reinstall windows to repair this

It sounds like the problem you are having
Yeah. But the good thing is, at least, it runs without an overclock just fine. It only does this while overclocked.
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post #8 of 12
Doesn't Sandy Bridge require VCCIO and VDIMM to be within 0.5v? If you're running VDIMM at 1.640v and VCCIO at stock (1.05v), could that cause degredation of the IMC? I know there were reports of that problem initially, but I wasn't sure if they were still occurring.

[edit: It helps if I read and notice the proper platform. Sorry about that.]
Edited by Cilraaz - 5/16/11 at 1:07pm
post #9 of 12
Quote:
Originally Posted by Cilraaz View Post
Doesn't Sandy Bridge require VCCIO and VDIMM to be within 0.5v? If you're running VDIMM at 1.640v and VCCIO at stock (1.05v), could that cause degredation of the IMC? I know there were reports of that problem initially, but I wasn't sure if they were still occurring.
The OP has a 1366 rig, VTT is usually at least 1.15V stock so fine with 1.65V memory.
    
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post #10 of 12
Quote:
Originally Posted by FtW 420 View Post
The OP has a 1366 rig, VTT is usually at least 1.15V stock so fine with 1.65V memory.
My reading comprehension has failed me. Please ignore the previous post.
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