Computer mainboard 775 does auto shutdown after seconds

Discussion in 'Technical Repair' started by UnnamedUser159, Sep 20, 2016.

  1. UnnamedUser159

    Thread Starter Member

    May 3, 2016
    130
    0
    Hi there.
    What i have done
    CLRTC with jumper
    measure the bios battery - 2.9x volts

    Put my tested - cpu, ram, vga and psu

    The picture : when i power the mb and short the power pins the motherboard is powering up and there is a picture on the monitor. Some message about CPU overclock is shown. Then the machine does auto shutdown. If i try to power it again it doesn`t start.
    I put the psu switch to 0 and then to 1. The mainboard is powering up without picture although the keyboard LED has blinked.

    Thanks in advance

    https://drive.google.com/file/d/0Bxome1ZSCRIaNjYwZGpjakd2dGZuZTJ4TkRqb2NwLXFCMEFj/view?usp=sharing
    https://drive.google.com/file/d/0Bxome1ZSCRIaS281VjNEV01zRmFHY2NIWVkyX3hoQ0Q0NjBF/view?usp=sharing
    https://drive.google.com/file/d/0Bxome1ZSCRIabkhaLXJiNUQ3U0ZDR0Izbm0tamNzSmlyYXh3/view?usp=sharing

    mainboard-pic01.jpg
    mainboard-pic02.jpg
    mainboard-pic03.jpg
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    Last edited: Sep 20, 2016
  2. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,754
    760
    Try a bios reset.
    If on, can you go into bios setup to load the default settings ?
     
  3. UnnamedUser159

    Thread Starter Member

    May 3, 2016
    130
    0
    I did move the CLRTC jumper to position 2-3 for 10 seconds and then put it back on 1-2. Isn`t that BIOS reset ?

    The machine is going auto shutdown very soon after powered on
     
  4. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,754
    760
    Are the power switch panel headers installed or are u just shorting the power pin at the header to power on ?
    Did you test the PSU properly?

    By Soon does not mean a thing. How soon? can you see bios setup? Can you enter bios setup ?
     
  5. UnnamedUser159

    Thread Starter Member

    May 3, 2016
    130
    0
    i just short the power pins direct on the MB.
    The PSU is mine and test all the boards with it.

    Now i have turned on the board and after 15 seconds it is shutdown-ing :)
     
  6. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,348
    Hello,

    Can you enter the bios?
    If so, can you look at the cpu clock and voltage to the default values?

    Bertus
     
  7. UnnamedUser159

    Thread Starter Member

    May 3, 2016
    130
    0
    No way :)

    I will see if i have programmer for that type bios chips
     
  8. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,348
    Hello,

    Is there no hint for entering the bios, like "hit F1 to enter setup"?
    The F1 can also be F12 or esc. (also when no message is shown).

    Bertus
     
  9. UnnamedUser159

    Thread Starter Member

    May 3, 2016
    130
    0
    The problem is not in EnterKey.

    I am not sure that 15secs are enough for something.

    I measure them between my short of the pins and stoping the cooler. Maybe really i have only 10 secs with picture on the monitor.
     
  10. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,348
    Hello,

    When the cooler is stopped, the processor will heat-up and the motherboard will go in shutdown for safety.
    ALWAYS have the cooler running.

    Bertus
     
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