Black screen after powering up PC

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  1. Maloon
    Posts : 7
    10
       New #1

    Black screen after powering up PC


    Hello everyone! Recently I added a new hard disk to my desktop and after I tried to power my PC up, the monitor led just flashes and I got nothing on my screen, not even bios loading or something, just black. So before answering, you should know:
    1. I tried pulling out BIOS battery from my motherboard and putting it back in - no results
    2. I tried with a new monitor and a new cable - no results
    3. Tried to move to my integrated video card - no results
    So recently I took everything out of my pc, the carcass was empty, I cleared out everything of dust and connected everything back tighter than last time. Now, I got the same results, but the video card cooler isn't working anymore. Tried to connect again to the integrated one, still no results.
    This time I think i connected something wrong on the power pins ( at least that's how I think they are called ). Here are some photos of them and the connectors(and that little thing that was put there):







    Can you help me connect these correctly and solve my problem? Thanks for your time
      My Computer
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  3. Dude
    Posts : 16,641
    Windows 11 Pro X64
       New #2

    Hello and welcome to the forums. We can try to help. We need to know what MotherBoard you have. The MB manual will show the pin out.
      My Computers
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  4. ThrashZone
    Posts : 7,724
    3-Win-7Prox64 3-Win10Prox64 3-LinuxMint20.2
       New #3

    HI,
    Disassemble 101 is take pictures before taking apart anything
      My Computers
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  6. Maloon
    Posts : 7
    10
    Thread Starter
       New #4

    I think this is what you are looking for?:

    image upload
      My Computer
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  7. Maloon
    Posts : 7
    10
    Thread Starter
       New #5

    ThrashZone said:
    HI,
    Disassemble 101 is take pictures before taking apart anything
    You're right, my bad here.
      My Computer
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  8. ThrashZone
    Posts : 7,724
    3-Win-7Prox64 3-Win10Prox64 3-LinuxMint20.2
       New #6

    The large one is easy just use the 4 open ports to match the four pins
    The little three pin you'd just have to test where it goes
    But you can go off the large one the way it hooks up as an example of which way the little silver openings side goes and face them towards the other connector.
    Otherwise one would just have to trace the wire to where it's coming from and know red is usually the hot and black is usually the ground if no green is around but black can also be the hot if no red is around
    Black screen after powering up PC-silver.jpg
      My Computers
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  9. Maloon
    Posts : 7
    10
    Thread Starter
       New #7

    I think I managed the pins, now my video card is not working and when i try the integrated one the monitor just stays black with led flashing.
      My Computer
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  10. ThrashZone
    Posts : 7,724
    3-Win-7Prox64 3-Win10Prox64 3-LinuxMint20.2
       New #8

    Hi,
    This was the easy one for the large port
    Black screen after powering up PC-large-connection.jpg
      My Computers
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  12. Dude
    Posts : 16,641
    Windows 11 Pro X64
       New #9

    I found this
    ftp://ftp.webcentral.hu/pc-max/PC/Fu...10_1081193.PDF
    Black screen after powering up PC-2017-12-05_12h27_53.png

    Will need to know what GPU you have, may need a driver update. Lets take a look with speccy

    Speccy download Speccy - Builds

    It will show this
    Black screen after powering up PC-2017-12-05_12h30_50.png
      My Computers
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  13. ThrashZone
    Posts : 7,724
    3-Win-7Prox64 3-Win10Prox64 3-LinuxMint20.2
       New #10

    Hi,
    May have gotten that backwards see how this matches up
    Black screen after powering up PC-backwards.jpg
      My Computers
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