Computer Freezes Intermittently

Gigabyte / Ga-ex58-ud5
February 16, 2009 at 20:24:37
Specs: Windows Vista, intel core i7 920 6GB ram
I am having a problem with my desktop computer that I built about two months ago, it freezes randomly for anywhere from 3-5 seconds, I cannot move the mouse, the hourglass animation stops completely, and any program or file open in the background freezes completely. also,when booting my computer will occasionally reboot itself after the POST sequence, or not POST at all and go directly to a black screen where an awful internal grinding noise from the fans begins to ensue. I am beginning to think that this is a hardware issue as I have run countless virus scans, and have updated all of my drivers, and motherboard BIOS to try to solve the problem, but no luck. I am beginning to think it is my RAM, Motherboard or Primary Hard Drive, but I passed the windows memory test, and passed a hard drive diagnostic test...
for further clarification, the freezing occurs about every 30 minutes to an hour, more frequently if I am playing a game or watching a video. and starts with an electrical buzzing sound, followed by the fans cranking up to full speed, then followed by a clicking noise when the computer resumes. For what it's worth also, my LAN ports randomly died one day, and came back online randomly later on that same day

My Specs Are:
OS: Vista Business 64-Bit
HD: Western Digital Caviar Black 640GB
Video: Powercolor Radeon HD4830
CPU: Intel Core i7 920
RAM: G-Skill 6GB DDR3 1333 CAS 7
Motherboard: Gigabyte GA-EX58-UD5
BIOS: F5g
PSU: Thermaltake 850W Modular PSU w/3+12V rails @ 18A.

Temps
CPU: 37 C (idle)
GPU: 42 C (idle)



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#1
February 16, 2009 at 20:32:31
You have a serious problem somewhere. While Thermaltake is a decent brand, yours may have been part of a bad batch.

Swap it out with another one with a similar wattage if possible.

What kind of diagnostic did you perform on the hard disk? If you tried a "quick scan," try a full scan if possible.

WinSimple Software


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#2
February 16, 2009 at 20:35:56
Don't think its the PSU though, can run Crysis on ultra high for hours without a BSOD or reboot, also had problems with a PSU before, and replaced it with this one (on the same machine), that one would cause system reboots while doing cpu/gpu intensive tasks. I'm still thinking RAM, HD, or Motherboard... guess I'll just have to test them 1 by 1 exhaustively until I've found the culprit

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#3
February 16, 2009 at 21:58:23
"Don't think its the PSU though, can run Crysis on ultra high for hours without a BSOD or reboot, also had problems with a PSU before, and replaced it with this one (on the same machine), that one would cause system reboots while doing cpu/gpu intensive tasks. I'm still thinking RAM, HD, or Motherboard..."

Well, if you already know what the problem is, why did you post here :)?

WinSimple Software


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#4
February 16, 2009 at 23:43:26
well it is always good to get a second opinion before dishing out the extra cash on new parts, especially for a core i7 system in which the individual components cost hundreds of dollars. also, dug out some old DDR3 ram and put it in, and the freezing issues have ceased unless the system has been idling for a while and I try to do a search in the vista start menu.

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