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New bough computer resets/powers off/on

By observ
Mar 30, 2011
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  1. Motherboard: Asus M4A87TD
    AMD Phenom X4 II SKT 640 3.00GHz AM3 box
    Memory: 2x Kingmax 2GB DDR3 1333MHz CL9
    Video Card: Gainward GeForce GTX 460 768MB 192-bit DDR5
    HDD: Western Digital 500GB SATA 7200RPM 16MB Caviar KX III
    Source: HPC-500-H12S Sirtec
    Case: Antec VSK-2000
    Optical Drive: Optiarc AD-5260S Black Bulk

    Symptoms and other details:
    - It worked at work (5 hours uptime without reset)
    - With an extension of the Carrefour:
    1. Reset after 2 minutes
    2. Restarted: it resets again after 3-5 seconds
    3. Restarted after an half an hour: it resets everything back to 3-5 seconds
    - With a protection strip V-Mark Extension SGE with shock protection:
    1. Starts without problems
    2. Install Windows 7 (64) + about 5 restarts for updates
    3. After a few minutes monitor is showing : windows is shutting down
    4. I power up again and now it only stays for a few seconds up then it shuts down again itself then power up again itself. I powering off and remove the cable from PSU
    5. After a few hours i start it again without the DVD-drive, and it loads the windows
    6. I shutdown from windows manually, and after 10 minutes it starts by itself just to shutdown again.

    Any suggestions what it might be? I would hate to have to bring it to warranty.
     
  2. Leeky

    Leeky TS Evangelist Posts: 3,797   +116

    ~Your GPU problems are related to this... In fact this post pretty much makes the information regarding your problems impossible given its not even running properly.

    I'm closing your other thread to avoid confusion, as this is more important you resolve.
     
  3. observ

    observ TS Rookie Topic Starter

    I will copy the info here then:
    I try to connect GTX 460 768 MB with a 23 inch Philips monitor (1920 x 1080)
    I tried the following:
    1. Output DVI-D video card with DVI-D monitor
    2. DVI-I output video card with DVI-D monitor
    3. Other Single-Link Cable still the same two tests
    4. Reinstalled the video card driver 5-6 times
    a. installation CD
    b. from Nvidia on site
    c. from the Gainward site

    Instead I go to the VGA. If I put the DVI monitor to say "no video input" -> sleep mode -> Analog VGA (D-Sub).

    I must say that initially worked on the DVI-D DVI-D video monitor with the Single-Link cable.

    Also when i am playing HD movies i get image freezing, video and audio lagging behind.

    Drivers:
    CD: 260.99
    NVIDIA site: 266.58
    Gainward: 266.77

    PSU: http://www.highpower-tech.com/eng/product_page.php?class=20100527154213&id=20100530203115
     
  4. observ

    observ TS Rookie Topic Starter

    It seems that it has to do with the reset and power button. Without those connected to the motherboard, the computer runs fine (no resets)

    However the initial problem with DVI connection still persists. I will try today a different videocard, to rule out (or in) my current card.
     
  5. observ

    observ TS Rookie Topic Starter

    Tried with an 8400GS and still no DVI signal input
     

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