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Reboots even after Voltage increase

Last response: in Graphics & Displays
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August 28, 2008 6:23:21 PM

I need help determining what piece of my computer is in need of attention, please see below for the history on the issue, including some workarounds that worked but dont seem to fix the issue.

Specs:
1x Intel E8400 @ 3.0GHz
2x 1Gig OCZhttp://en.wikipedia.org/wiki/OCZ_Technology DDR3 PC3-10666 / 1333MHz / Platinum Edition
1x OCZ 600w GameXstreme PSU
1x Intel X48bt2 MotherBoard
1x Asus EAH4850 ATI 512 Vid Card
1x WD Cavier 250gig sata 2http://en.wikipedia.org/wiki/Serial_ATA 16mb
On Board sound
On Board Lan
2x 17' Dell LCD 1905fp
Windows Vistahttp://en.wikipedia.org/wiki/Windows_Vista SP1

History:
All of this is new as of two weeks ago, everything was bought retail except the MB which was Ebay'd as "New in Box". I orignally tried with Windows XPwindows xp , but have sense gone to vista as part of the trouble shooting.

I have a problem with reboots, no BSOD, no errors i can find, no Event Viewer Entries, and no MB logs(that i can find). The screen goes black, the monitor goes orange, then comes back to green as it boots up normally.

I have seen these reboots randomly, and every single time i try and load Unreal Tournement 3.

Random Events:
-after making a change to Catalysthttp://en.wikipedia.org/wiki/Catalysis control center of downgrading AA and AF by one notch and pressing "OK"
-Dureing the Windows XP loading screen, about 5 seconds into it. This has occured multiple times, some times in a row. I have not seen this sense Vista was installed.
-After boot uphttp://en.wikipedia.org/wiki/Booting in XP, and going into the control panel straight away
-Twice at random points while useing the Sporehttp://en.wikipedia.org/wiki/Spore creature creator.
-At a random point while useing the desktop in Vista.

Unreal Tournament 3:
-As the program starts it displays the copyright info, then reboots before the spam of company logo animations occurs.
-Commenting out the logo animations gets me in game, however the moment i click start game it reboots, and i mean the moment, the loading screens comes up but is gone before you could even read a word of it.

I have tried all the Stickied things on the UT3 forums, none of which worked, and the other reboots that act the same cause me to believe its not a UT3 issue, though UT3 is the only repeatable reboothttp://en.wikipedia.org/wiki/ReBoot .

I have tried disabling the on board sound, even in bios. I have tried installed an Audigy sound cardhttp://en.wikipedia.org/wiki/Sound_card as well, no change.

The game has been reinstalled multiple times, and patched.

I have used 8.5 drivers that came with the Vid card, 8.6 Hotfix from their site, and finnally the 8.7 recently released. I have cleanly removed them all before installation.

I tried 3Dmark's newest tests, and saw a reboot once at the start of test 3(CPU test), but it completed it successfully 4 times after that one reboot with no changes made.

What DOES work:
-i swapped my ATI 4850, with a freinds Nvidia 8800. And the game worked, i did not see a reboot outside of it while it was in, but the out of game reboots like i said are not repeatable, though they did happen frequently enough.
---the kicker is he put my ATI 4850 in his machine at the same time, and it worked for his UT3 just fine....no tweaks, 8.6 hotfix drivers.

-I upped the Voltage on my Ram a decent amount(at work atm, i can get the exact amount later, but it was a good amount that was still within OCZ's handling quote). This fixed UT3, runs great at the highest possible settings even, however certain maps will load for a bit then reboot the machine dureing the load.

While the ram voltage is a decent work around, i dont believe this addresses the actual issue.

I have run Memtest and after an hour and half it had zero errors, also i've sense found that it will reboot with half life 2 episode 2, dureing the opening sequence, it will actually go through more of it the lower the settings, until it finnaly plays the whole thing...

halp
August 28, 2008 8:23:47 PM

I know you ran memtest, but just to make sure try with only one stick and if it reboots try the other.
Also update bios
!