Random Stuttering, Freezing After Rebuild

DZ469

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May 17, 2013
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Hello, all!

Just put together my desktop which had been sitting idle after losing its motherboard. I had previously tried to overclock the setup and burned out a set of RAM, which I got replaced, and then started having some BSOD's. I had a local computer repairman check everything over: the new set of RAM worked okay in another system, so that wasn't the problem. I forget if he tested the CPU or motherboard, but he said the Mobo was most likely the problem so I ordered a new one and put everything back together. The setup I am currently running is this:

Intel i5-2500K @ stock freq.
ASUS P8Z77V-LK mobo
16GB Corsair Vengeance DDR3-1600
EVGA Geforce GTX 560 Ti
Kingston 128GB SSD
WD Caviar SE 320GB HDD
Cougar 750W PSU

The problem that I'm now running in to is that after a while of being powered on, the system will randomly stutter/lag and then freeze up, requiring a hard shutdown and reboot to fix. I'm not quite sure what the issue is, though. I tested the memory with Windows' Memory Diagnostic tool, which brought up no errors. I ran a Chkdsk on my boot drive which also revealed nothing. I then ran Prime95 for ~1 hour and all the tests passed, but the issue kept cropping up. I decided to reinstall Windows to see if any drivers from previous installations were conflicting but it just froze up on me so that didn't fix it.

The issue typically occurs in Firefox or other when running many applications at the same time. Also of note, while I was removing the Arctic Silver 5 from my CPU from its previous installation, some of the ArtiClean dripped down onto the CPU's PCB. I wiped it up as best I can, but I wonder if some of the dissolved AS5 is messing with the CPU leads. *None of the AS5 got onto the bottom of the CPU.*

How likely is it then that the problem lies with my brand new motherboard? I could run P95 longer to see if the CPU holds up or run Memtest to recheck the RAM. Any suggestions?
 

clutchc

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Just to be sure the problem isn't likely to be software related, run CCleaner and do the Clean and Registry sections both. Do them until they come back clean.
http://www.piriform.com/ccleaner

You may want to try using the PC in Safe Mode (as a test) to see if the issue occurs with no drivers loaded. See if you can get the issue to occur in SM.

What did you use to 'wipe up' the AS5? Hopefully it was some kind of thermal paste cleaner, because AC5 is highly electrically conductive.
 

DZ469

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May 17, 2013
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I did a clean install of W7 so CCleaner shouldn't come up with anything. And I used ArtiClean 1 & 2 to dissolve the AS5 and a paper towel to wipe it off the CPU.
 

clutchc

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Oh, I thought you meant the AS5 dripped on the MB. You must have meant the material the CPU's heat spreader cap is covering. That shouldn't be an issue if you cleaned it off.

The MB could well be the culprit. It contains the bulk of the PC's componentry. And yes, running at least 1 full pass on each stick of RAM individually in the 1st slot would be a good idea to eliminate that possibility.
 

DZ469

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May 17, 2013
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No, none of the AS5 got on the motherboard, but the ArtiClean did run down off the heat spreader as I was cleaning, so some dissolved AS5 might've run down with it. I don't think any got on the actual electrical parts of the CPU however.

How often do new motherboards go bad? I admit my static prevention methods aren't the greatest since I dislike wearing those anti-static bands, but I did my best to always contact a metal part of the case before touching anything and I wore rubber-soled shoes to avoid creating static from the carpet. If I eliminate CPU and RAM as possible error points, how can I tell for sure that the motherboard is bad?

 

clutchc

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Not easy to be sure the board is the culprit. Usually, if they are defective, they are DOA when you first get them. If yours was in service for awhile, it is less likely it is bad. But still very possible. (I assume you haven't been O/Cing this one) MBs contain the bulk of the circuitry of your PC. That's why I made the suggestions above to try to narrow it down. Since the issue only arises after being up and running for awhile, it is difficult to pin point. But that sounds like something failing when it gets hot.

Like you, I have gotten out of the habit of wearing my grounding wrist strap too. I constantly touch some unpainted metal of the case like you. And if possible, leave the PSU plugged in (but turned off) to provide a path to ground for static discharge. (assuming you live in the US where we have a 3-wire 120V grounded neutral electrical outlet system)

Freezing is usually a driver issue or bad RAM. Stuttering (if you mean video) would usually indicate a gfx card problem. Then there's the PSU... also a likely culprit. I know I'm not much help, but those are all components that can present the symptoms you describe.