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Problems with no video - sometimes - HELP

By robsky1
Sep 18, 2006
  1. Okay. Here is a brain buster for you.

    I’m working on a Win XP system. It’s custom built. Here are the specks

    Antec 1650B case with 350 W power supply
    AMD Athlon64 3200+
    Asus A8V motherboard
    BFG 5500 OC 256 MB Gforce AGP video card
    Western Digital IDE 160 GB Hard Drive
    LG CD/DVD R/R burner
    1024 MB (2x512) generic Memory
    56K HSP56 Modem

    Here’s the problem. When I try to boot up into windows, sometimes it works and sometimes not. When it does boot up into Windows, The screen flickers (I tried to lower the refresh rate). I have installed the latest video driver and no change. If I turn the system off and try to turn it back on, No video signal. Sometimes when it does boot into windows, the video signal will cut out just as it’s loading into the logon screen and then restart the PC. I will admit that I have heard the hard drive tick on occasion.
    Here is what I have tried. I have tried another video card (AGP and PCI). I have tried using another hard drive. It did allow me to reinstall the OS but after rebooting several times, the video cuts out again on startup. I have sent the MB back to Asus and they say there is nothing wrong. I’m running out of ideas. Has anyone seen anything like this before? I’m trying to focus on one part but every time I try another part, it keeps coming back. I can only assume one of two components is the cause. Either the video card, or the MB was not tested enough.

    Any thoughts
     
  2. F1N3ST

    F1N3ST TS Rookie Posts: 596

    PSU Mb, check it.
     
  3. DonNagual

    DonNagual TechSpot Ambassador Posts: 2,404

    I'll second what P1N3ST says above. Power supply is a likely suspect.

    If you can boot up long enough to get into your bios, check the voltage readings on the +3.3v, +5v and +12v rails and see what kind of readings it is giving you.

    Another possibility would be your ram. Download www.memtest.org and run it on your computer (if you can).

    I am assuming you have this problem even if you boot up into safe mode?
     
  4. robsky1

    robsky1 TS Rookie Topic Starter

    Hi Guys. Thanks for the reply posts. I'm going to see about the voltage settings and I'll let you know. Worst case, I'll swap out the PS to test. System works fine in safe mode. I can reboot 5 or 10 times without a problem and then (like now) nothing.

    I'll keep you posted.

    Robsky1
     
  5. robsky1

    robsky1 TS Rookie Topic Starter

    All fixed. Thanks

    Hi All

    Thanks for your help on this. It was the PS. Don't know why I diden't see it before. I guess cause it was intermittent, it threw me off. She's up and running and I have it on test for the next few days.


    A BIG thank you to FIN3ST & DonNagual. You know your stuff.

    Have a great weekend.

    Robsky1
     
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