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Built a new computer but it won't go throught POST

So I bought all the parts for a brand new computer and came home and plugged everything in. I installed the ASRock 945GCM-S motherboard. Intalled 2 gigs of memory, an 80 gig IDE hard drive and a SATA DVD ROM. I plugged in my 350W PS to the motherboard and the DVD and Hard drive. I plugged the cables for the buttons on the front of the tower. I made sure the voltage on the back was set to 115 and I started it up hoping to see the BIOS soon, but it never showed up. I plugged in speakers to see if I could hear the POST beeps and restarted it but nothing. I need help! I don't know what I have done wrong or what is wrong with the parts I bought. Please help me soon!

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  • 11 more comments 
  • stepht319 Mar 03, 2009

    Yes both plugs are in the MOBO

  • stepht319 Mar 03, 2009

    Of course I installed a processor. I installed a Intel Celeron 2.0. I gets warm when I turn on the PC. I used Crucial DDR2 Memory (1gig x 2 sticks). All the fans come on. The power supply fan, the cpu fan and the case fan all work. I'm using on board video but I also tried a separate card and neither worked.

  • stepht319 Mar 03, 2009

    yes the processor is installed as well as all the other parts. I have checked the connections multiple times and nothing has worked.

  • stepht319 Mar 03, 2009

    it says:
    1GB, DDR2, 800, CL6

    so i'm guessing 800 mhz


  • stepht319 Mar 03, 2009

    I thought that even if the motherboard ran slower than the memory, it would still work and the memory just wouldn't run at full capacity. I don't know, I mean that's what I have read on forums on the web. And I don't quite understand what you are saying about the processor. Is it too fast as well?



    and to answer other clarification requests: yes I did reset the CMOS and it didn't help.

  • stepht319 Mar 03, 2009

    I was checking my processor and it says it has 800MHz FSB so shouldn't I be able to use the 800 MHz memory? The processor is a celeron processor 440, LGA775 pkg, 2 GHz, 512k, L2 cache, 800 MHz fsb

  • stepht319 Mar 04, 2009

    I finally figured it out. It's not the memory or the cpu, it was the pins for the cpu. I got it all worked out. Thanks to all who tried to help :).

  • stepht319 Mar 06, 2009

    yep I fixed it and it's working perfectly. thanks to all of you for your prompt answers.

  • Kevin Shafer
    Kevin Shafer May 11, 2010

    Have you tried resetting the CMOS? There should be a jumper on the motherboard to accomplish this.

  • Dick
    Dick May 11, 2010

    What speed DDR2?

  • Tim Crosslin May 11, 2010

    I know this is a simple question and a very easy one. But I have been known on one occasion forgot to install the processor. Did you do that?

  • Dick
    Dick May 11, 2010

    The motherboard requires a processor, did you install one? Which one? What memory did you use? You don't need speakers to hear the POST beeps, they come from directly on the board itself. Did the fans come on? Did you use the onboard video, or install a separate card?

  • Kevin Shafer
    Kevin Shafer May 11, 2010

    Did you plug in both plugs from the power supply into the motherboard?

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  • Master
  • 948 Answers

The memory is the problem then, your board does not support it. From the specs page here: Supports Dual Channel DDR2 667/533, 2 x DIMM slots, Max. capacity up to 4GB

Change the RAM and it should work.

Posted on Mar 03, 2009

  • Dick
    Dick Mar 03, 2009

    Keep in mind that if you are using a Celeron M 450 (the only one I see that runs at 2.0 GHz) you can only use 400 or 533 speed memory, because your processor only has a 533 MHz FSB according to page 8 in your motherboard manual.

  • Dick
    Dick Mar 05, 2009

    "I thought that even if the motherboard ran slower than the memory, it
    would still work and the memory just wouldn't run at full capacity."

    Often that is true, but it depends on your motherboard's capability. If the manufacturer says it won't work in the manual, and you are having trouble then the odds are good the memory is the problem. Luckily you found the pins you bent and all is well.


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