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New build - won't POST (I think?), starts up, fans work, motherboard powered fans work, HDD light works, but no video

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February 25, 2014 1:24:12 PM

Hello,

Today my new components arrived and I've been building it.

MSI B85M-G43
Intel i7 4770
8GB DDR3-1333 RAM (1 stick only)
XFX PRO550W

Usually I can figure out what's gone wrong on my own when stuff does with the help of POST beeps or an error code display on the motherboard. However, this motherboard seems to be lacking both of those.

I've followed the PERFORM THESE STEPS checklist a few times. The PC turns on fine. Fans are running, lights are flashing, the keyboard lights flash when powered on, but I cannot get video (tried multiple monitors, using different ports). My monitor just tells me "no signal" when plugged in and doesn't ever go beyond that.

I've tried:

  • Reseating the CPU/looking for bent pins (twice).
  • Checking the 4 pin power connector. My PSU has 3 of these. 2 four pins, one 8pin. I've tried them all. I even tried unplugging it and the system doesn't start, so the 4pin isn't the issue.
  • Checking for excess standoffs
  • Reseating the RAM in every slot. I even tried removing it altogether. That was the only time I got beeps out of the speaker. I'm unsure if this means the motherboard acknowledges that the RAM is fine or if it just accepts that it exists.
  • Unplugging everything except the CPU and RAM.
  • Removing all cables and RAM and removing the CMOS battery for 30 mins.


  • I'm a bit stumped as to what to try next. I have no way of testing the motherboard/cpu with different components. Do CPUs often come DOA? I know it's not uncommon for motherboards, but this motherboard isn't what I'd call traditional DOA.

    Any help you guys could give would be great. Thanks. :) 
    February 25, 2014 1:41:45 PM

    Is it possibly grounded against the case? Had a similar situation years ago. Fans worked, seemed to be getting power, but nothing else. Had to disassemble everything and found that the mobo was shorting against the bottom of the case as I forget to put in the riser screws.

    edit - guess those are called standoffs, didnt know that. you said you checked that already.
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    February 25, 2014 1:44:36 PM

    I'll try running the motherboard out of the case but I don't think that's the issue. I checked for excess motherboard standoffs, so I doubt it's shorting.
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    February 25, 2014 1:45:21 PM

    Graphics card?
    If yes, try using the onboard video first, then going into the bios and changing it.
    If no, uhh you could pickup a MOBO speaker at an electronics store (or order it online) so you can actually hear beep codes: http://www.newegg.com/Product/Product.aspx?Item=N82E168...

    Most mobos don't come with speakers unless they are bought from an OEM manufacturer.
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    February 25, 2014 1:47:00 PM

    I see you have 1 stick of ram. Maybe its bad. BTW, I was going to suggest running out of the case, but if youd already checked the standoffs thats likely not the problem. Thats how I found my issue years ago. Pulled whole thing apart, ram out of the case and it was fine. Then I found the issue with the standoffs.
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    February 25, 2014 1:50:30 PM

    James Mason said:
    Graphics card?
    If yes, try using the onboard video first, then going into the bios and changing it.
    If no, uhh you could pickup a MOBO speaker at an electronics store (or order it online) so you can actually hear beep codes: http://www.newegg.com/Product/Product.aspx?Item=N82E168...

    Most mobos don't come with speakers unless they are bought from an OEM manufacturer.


    No graphics card. If I could get into the bios we wouldn't be having this conversation. As I said, I have a speaker, and it only made noise when I removed the RAM completely.
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    February 25, 2014 1:54:41 PM

    How is the monitor hooked up? DVI, HDMI, VGA? Is it possible it needs to be hooked up by one of those inputs specifically until you have system installed and drivers installed?
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    February 25, 2014 1:59:08 PM

    I have tried multiple monitors in multiple ports.

    Further update: I tried booting without CPU or RAM. No beeps. Adding the CPU with no RAM results in beeps, which leads me to believe my RAM is almost certainly borked.
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    February 26, 2014 3:44:25 AM

    Did you ever get another stick of ram to try or get the system going?
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    February 26, 2014 7:10:18 AM

    Paulballs said:
    Did you ever get another stick of ram to try or get the system going?


    It's coming from Amazon tomorrow. I have never been so thankful for the Amazon Prime trial. :p 
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