New rig. Won't power up!

Discussion in 'Asus' started by Peter M. Hill, Dec 31, 2004.

  1. I am building up a new rig. I decided to build up the basic system
    BEFORE I bolted it down in the case so the board is on the bench.

    Athlon 2800+ Barton
    Stock CPU/HSF
    Crucial 512 stick in slot 1
    ATI 9600SE
    Antec Smartpower 350

    The unit will not power up. Fans will not turn and no beeps.
    The onboard LED is "on" when power is present.
    I have jumpered the ATX Power Switch to simulate "being in the case".
    The PS was tested ok with Antec ATX tester.
    All parts are new.
    I have removed the battery to clear the CMOS.
    I have removed the memory stick - no beep codes.

    Any ideas on how to isolate the problem?

    Peter M. Hill, Dec 31, 2004
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  2. It is necessary to "switch" the ATX Power Switch not just jumper it.
    While power was on the board and nothing running, I pulled off the
    jumper and it "jumped" to life.

    All is well so far. I need to get better testing equipment or a
    smarter brain.

    Peter M. Hill, Dec 31, 2004
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  3. Peter M. Hill

    Rob Guest

    Now that jumper your using is only for momentary contact right?
    Otherwise it will appear as a stuck case switch and once the PS trips
    the first time it most likely won't reset until the short (jumper) is
    removed and the input AC is recycled. The +5VDC that runs the Mobo
    light will still be present though. It is smart to test outside the
    case on a fresh build. If you have a meter you could check for the 5
    and 12 volt supply lines on one of the drive cables to verify if the PS
    is actually turning on. HTH.
    Rob, Dec 31, 2004

  4. Hi,

    can you check any of the components on another machine (RAM, VGA, PSU etc?)
    really helps speed up the trouble-shooting process! I had a very similar
    problem recently on a machine I built for a friend, during a game of
    HALF-LIFE2 his screen went black and nothing!. He tried to reboot but was
    greeted by a blank screen. All the fans were running and the motherboards
    lights were on? Cut a long story short it turned out the RADEON 9800Pro had
    completely died, to such a degree that it was preventing the system from
    even booting.

    I found this out by swapping out the 9800Pro with an older RADEON9000, and
    everything worked fine. Just to be sure I tried the 9800Pro in another
    machine and same thing, no boot!

    This particular story had a happy ending as I was able to RMA the card back
    to and get a replacement back and installed in time
    for xmas!

    Hope this helps,

    Wayne ][
    Wayne Youngman, Jan 7, 2005
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