Power problem

Discussion in 'Processors and motherboards Intel' started by marthand, Jan 20, 2011.

  1. marthand

    marthand Master Guru

    Messages:
    344
    Likes Received:
    0
    GPU:
    ATI 5850+Nvidia 8800GTS
    Double POST when overclocked

    When I power up my PC

    1.It powers up and all fans start

    2.After a sec all fans stop

    3.And again it powers up.

    It looks weired.I haven't saw it before.
     
    Last edited: Jan 21, 2011
  2. asingh

    asingh Master Guru

    Messages:
    226
    Likes Received:
    0
    GPU:
    Powercolor 4890 (X-Fire)
    It double posting. Mine did that too. Bad OC. You have any thing on OC..?
     
  3. Mufflore

    Mufflore Ancient Guru

    Messages:
    12,695
    Likes Received:
    1,290
    GPU:
    Aorus 3090 Xtreme
    I've seen this many times.
    On first power up, it tries to use the settings you have set in the BIOS.
    If it finds them unstable (by doing a quick test), it loads safe defaults for the BIOS and reboots.
    This is most likely what is happening.
    Try going back to stock settings and work from there.

    Check this first though:
    Try removing all USB devices as strangely they can interfere with the quick test, I have a memory stick that does exactly this, I can replicate the fault every time.
    Because of this I cannot boot the PC with that USB memory stick in when overclocked, other sticks are fine and dont cause the problem.
    When in Windows I can plug the stick in with the system hugely overclocked and it works great.
     
  4. marthand

    marthand Master Guru

    Messages:
    344
    Likes Received:
    0
    GPU:
    ATI 5850+Nvidia 8800GTS
    ya
    u said right

    I have two 4GB RAM sets with 667 and 800 speeds running both @667

    now it is stock speed getting no problem

    I would like to overclock it atleast @3.0 GHz
     

  5. Mufflore

    Mufflore Ancient Guru

    Messages:
    12,695
    Likes Received:
    1,290
    GPU:
    Aorus 3090 Xtreme
    Running 4 ram sticks reduces the maximum overclock and can even stop modules working at their rated speed.
    Lets assume that they will work at 667MHz , you would be unlucky not to be fully stable.


    I believe you have a 9x cpu multi, so 3GHz requires a 333MHz bus.
    the minimum memory multiplier on X38 chipset is x2 so you can achieve 3GHz with memory running at 667MHz.

    So quick and easy settings are:
    cpu multi x9
    memory multi 2
    bus 333MHz

    Start at 266MHz and work your way up, using Prime95 to test the CPU.
    Select "small FFTs" to test the CPU, "Blend" to test Ram (if you decide to overclock your ram).
    Monitor temps with Realtemp or Coretemp.

    Start at 266MHz bus and raise it 10MHz, test the CPU for stability for 10 mins, watch the temps.
    Repeat until Prime95 fails then drop back 5 or 10MHz and you should be stable.
    Do a final test by running Prime95 overnight.

    You MUST keep the CPU below 70C.
    To get 3GHz, you may need to put the CPU voltage up a little, try at stock volts first and watch the temps.
    If you hit 70C and it still doesnt work, you need better cooling (or less volts if possible).


    Theres more to it but thats a start, see how you get on.
     
  6. marthand

    marthand Master Guru

    Messages:
    344
    Likes Received:
    0
    GPU:
    ATI 5850+Nvidia 8800GTS
    I old days having 4GB of 800 MHz I can easily overclock my CPU to 3GHz @stock voltages.

    The problem occurs even I set my ram speed @667 and CPU @3GHz

    even though the double post occurs All components run @ overclocked speeds

    This double post occurs only when all input power is unplugged and connected again.
     
    Last edited: Jan 21, 2011
  7. marthand

    marthand Master Guru

    Messages:
    344
    Likes Received:
    0
    GPU:
    ATI 5850+Nvidia 8800GTS
    Double POST when overclocked

    Now I understand My problem

    My PC double POST after disconnected from power and overclocked

    It wasn't happened before
     
    Last edited: Jan 21, 2011

Share This Page