Random HARD shut downs.

August 12, 2009 at 22:44:59
Specs: Windows Vista, Intel Q9300
So for about the pass month my computer has been randomly shutting down as if I were to pull the power cable out of the wall. 100% random. I could be playing a game, listing to music, or even be in safe mode. Event log is showing an event ID of 6008 which is just a basic unexpected shut down with nothing happening before it. First thing I did was assume it is my apartment and power fluctuating because I thought I would also see the lights go dim with in a blink of the eye, so I went and bought an UPS. Didn't help. It has been getting hot so I did a bunch of reading up on some temp readers.Got realtemp and followed its prob directions and found myself getting pretty hot, upto 80c at 100% load at apx. 1500hrs (gets about 90f in my apartment lately). I bought a lapping kit and did pretty good with it and dropped CPU temp to 69-75c during the hottest points of the day and 60c middle of the night. Still a little hot but I believe with in the processor threshold. (reminder: 100% random shut downs, could be 1500hrs or 0200hrs high and low temp shut downs)
I have gone into bios and made sure thermal throttling is turned off.:::shutdown 1 since writing this::::
Prior to these shutdowns I haven't installed any hardware or programs, may have been an OS update or two.
Here is my computer spec. Hand built last year:
~EVGA LGA 775 nForce 780i SLI Intel Motherboard
~Intel Core 2 Quad Q9300 Yorkfield 2.5GHz Quad-Core Processor
~ZEROtherm CF900 92mm CPU Cooler
~CORSAIR XMS2 DHX 4GB (2 x 2GB) DDR2 800 Dual Channel Kit
~EVGA GeForce 8800GT Superclocked 512MB 256-bit GDDR3 PCI Express 2.0 (only 1)
~OCZ GameXStream 600w Power Supply
~Creative Sound Blaster X-Fi Platinum Fatal1ty Champion Sound Card
~Windows Visa Ultimate SP1 32bit
~Netgear 108mbps Wireless PCI Adapter WG311T
~Western Digital Caviar SE16 250GB 7200 RPM SATA 3.0Gb/s (2 of them in raid- 3 partitions 60gigs for OS all games and music on separate partition)
~All housed inside a Thermaltake VA8003BWS Case with 250mm side fan.

PSU never smells bad. I'm running out of options and ideas, not to mention no money.
Any help will be GREATLY appreciated and feel free to leave any questions comments gripes or concerns.

Again ty.

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August 18, 2009 at 16:59:20
So its been a couple days and I have noticed a few things.
Computer doesn't do its 1st shut down until the computer has been on for 8-20hrs. After the 1st crash it continues to crash ever 40min-1.5hrs, until I give up and just leave it off for about 12hrs.

Few questions other then whats wrong this this thing.
If the CPU is getting too hot wouldn't it just shut itself off and the hard drives, while leaving the fans on? In my case everything turns off except for the Mobo light.
Is Vista capable of doing such a hard power down?
If it was the PSU, wouldn't I not be able to continually power the system back on with out a problem?

With this nifty little Nvidia control panel I upped the VC fan and South bridge fan to 100% to decrease temps even more.
Nothing is OC and after updating BIOS, CPU now runs at 2.3 vs 2.5.

I've done stress tests, benchmark test, and heat up tests. I even intentionally upped FSB freq, and voltages to create shut down to try and immulate what is going wrong but I just can't force it to do the same thing. I just get normal unresponsiveness due to over-over clock.

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August 26, 2009 at 18:24:13
There are two areas you can check. You should use a utility (probably on the Intel MoBo site or see below) to read the voltages of the power supply. They should be nominal +/- 5% like for 12V it is 11.40V to 12.6V .

The second area to be concerned is the HD. If your temps are getting up high, you can get HD crashes. Find another utility tht will read their temps. I think Speedfan can do most of it and you can see if the HD is going bad as well.

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