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Need Help: Theory and Diagnostic Software

post #1 of 21
Thread Starter 
Friday, concerned about temps, I decided to try an experiment, rotating the HSF and adding a second fan. Intel 775 pins holding it, I popped the MB to make sure everything was well seated. Also removed the memory for better access.

Cleaned the CPU and HSF (a Xigmatek 1283) with Artic Silver cleaner 1 & 2, new AS5, and together.

Temps dropped about 5°C. However, OCCT crashed after 5 seconds. Lowering the clock to 333 (from 365, where it ran OCCT for 15 minutes before, thermal problems with more) it ran for about 90 seconds. Rebooting at 2.4 (memory at 667 with lazy 6-8-8-24 timings) ran the 10 minutes OCCT test (5 minutes at load).

Ummm....decided to test for a memory problem. Tried the Vista memory test (running Vista x64 Ulimate), test reported a hardware failure than failed...locking up.

Decided to see if OCCT could be used as a memory test. Ran one bank (2x2GB, normally 4x4GB), crashed. Tried the other bank, Vista wanted my serial number again? Still don't now why. Ran the test....crashed.

Next reboot with both banks, Vista blue screened during load. Ran safe mode, froze after loading crcdisk.sys. Ran repair twice...no luck.

Thinking it may be an unseen thermal effect (really chasing my tail here) I rotated the HSF. Used MX2 instead of AS5.

Tried again...no luck. Loaded Vista on another disk (where I am typing this from), it loaded, booted, is installing 28 of 53 as I type.

OCCT still fails...in 5 sec at 3Ghz and 1.35v. Core emps are reported 46-37 at idle. Note that 'CPU' temp, reported in BIOS, Gigabyte, and as Temp 2 in SpeedFan is 25C.

Did I somehow screw up the CPU? How what would account for the intermittent issues. Why is it running now and failing under OCCT? A floating point processing issue? Doesnt the browser use floating point facilities during SSL key negotiation?

I am very confused. Is there a CPU test product that records what is testing before it tests? Is there a good memory test product that runs under Vista x64 or a DOS boot? (how many of you remember when DOS had a flat file system ona 160kB diskette?)

I must have damaged something...not sure. More than happy to admit my failure, if only I can fix it!

Help...and thanks in advance!
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post #2 of 21
Download Memtest86+, burn it to a CD, and boot from CD to run it. Test your memory, as it sounds like the memory is failing. When you're running the tests...touch your memory lightly with your finger, if you get burned, you need to investigate the airflow around your memory to keep it cool.
R'lyeh
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post #3 of 21
Thread Starter 
Memtest freezes in test 3...locks up displaying screen. Is that a memory failure?
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post #4 of 21
Sounds like it, test each stick individually to see if you can isolate it to a particular stick of memory.
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post #5 of 21
Thread Starter 
I tried setting address ranges in 2GB increments. It tests all ranges other than a s[ace between 3500-4000MB that seemed blocked out. In failed in each range at approximately the same point in the test.

Are you saying it is necessary to test one stick at a time? Wouldn't that always miss the same space?
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post #6 of 21
Are you running the Windows version? You should have downloaded the .iso file, burned it to CD, and booted from the CD. No need to set address ranges, just boot with one stick, see if it fails. Then try another, and another, and another.
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post #7 of 21
Thread Starter 
Ran it. Seem a memory stick is bad on one bit. And only shows on Test 7. Once on pass one, twice each on pass 2 and 3. That means there is a probablity it could even make one pass without error!
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post #8 of 21
Thread Starter 
Maybe i don't have it...it seems to run fine EXCEPT OCCT hangs the system...no crashes...no too hot...just stops...locked like a rock...at OC...at 2.4Ghz and 1.3125v

And with memory sticks that passed memset.

No dump...it just hung.
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post #9 of 21
If you get any errors in memtest at all, on any of the tests, then the memory is bad. Its time to rma them.
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post #10 of 21
Thread Starter 
will rma the bad one...however, could the cpu also have a problem? The bad memory is out and it still hangs...doesn't crash, freezes...
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Number 1
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