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New computer randomly restarts when running games in fullscreen

By arangar32
Mar 23, 2011
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  1. Just got a new computer 2 days ago:

    Alienware Aurora_r3
    Intel Core i7-2600 CPU @ 3.40 Ghz
    4.00 GB ram
    Windows 7 (64bit)
    Dual video cards, both AMD Radeon HD 6800 series, with latest catalyst drivers installed directly from the website

    Whenever I try to run games in full screen mode (as opposed to windowed), after 2 to 5 minutes my computer will just turn off. No error messages, warning sounds, lights, anything.. it just turns off. Affected games include Starcraft2, WoW, League of Legends, that I have tested so far.

    However, if I run these games in windowed mode, I can play without interruption with all graphic options turned to the max. Problem does not appear to be overheating, as the thermal indicator software that came with pre-installed never gets above 29°C.

    Any ideas how to fix? I don't want to have to send it back 2 days after getting it :(
  2. bushwhacker

    bushwhacker TechSpot Chancellor Posts: 766

    Alienware has been known with plagued thermal problems.

    You can check inside the case and see if there's any possible mis-directed air flows, and point the duct, or add the fan to that area and see if that helps.

    Dual video cards are known to be overheat very easily. If you have three PCI-E slots, move the last HD6800 to the bottom and extend the Crossfire cable to there, and see if that actually remedy with that kind of problem.

    Otherwise, send it back and complain that you were ripped off, and maybe they could fix it for free.

    EDITED: There's other possible options;

    - kill all tasks in task manager, or using the batch with " taskkill /F /IM "program name"
    - update your directX
    - Downgrade your catalyst driver version to the factory driver, or upgrade to the newest driver that is FROM ATI/AMD website. ( www.amd.com )
    - leave your side case to open up the more air-flows in the computer.

    Welcome to Techspot, arangar32!
  3. treetops

    treetops TS Evangelist Posts: 2,287   +371

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