Pc turns on but doesn't display anything

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  • Jog247
    PCHF Member
    • Feb 2021
    • 7

    #1

    Pc turns on but doesn't display anything

    Hello, I’ve had my pc for 4-5 years now and I built it myself and have had no issues with it until a couple days ago. I was installing new fans and everything was working fine until.i tried to start it up again. I undid the new instillation and went back to my old fans but still no joy. I thought it could have been the power supply and I may have over did it so I got a new one which could handle more watts. After installing that I still have no joy. I have checked all the wiring internally to see if I could have knocked anything loose but everything is in fine it seems. I run a gtx 1080, 16gb corsair ram, intel i7 and the power supply I previously had was a evea 700b and the new one is a corsair tx850m. Let me know if any other information is needed.

    I also noticed that my gpu fans wiggle as if they are trying to start but then stop after a couple of seconds. I haven’t noticed that before if that is any help.
  • phillpower2
    PCHF Administrator
    • Sep 2016
    • 15209

    #2
    Hello Jog247.

    Have you tried/checked the following;

    The CPU cooling fan is securely connected to the correct header on the MB.

    Reseating the RAM.

    If you have more than one stick of RAM trying one stick at a time.

    Removing the add on GPU and connecting the screen to a video port on the MB, we know you have an i7 CPU but not what motherboard so you may or may not have this option.

    Pulling the CMOS battery from the MB and then putting it back in after ten minutes or so.

    Something that is often overlooked, be sure to have a keyboard connected when troubleshooting.

    Comment

    • Jog247
      PCHF Member
      • Feb 2021
      • 7

      #3
      Originally posted by phillpower2
      Hello Jog247.

      Have you tried/checked the following;

      The CPU cooling fan is securely connected to the correct header on the MB.

      Reseating the RAM.

      If you have more than one stick of RAM trying one stick at a time.

      Removing the add on GPU and connecting the screen to a video port on the MB, we know you have an i7 CPU but not what motherboard so you may or may not have this option.

      Pulling the CMOS battery from the MB and then putting it back in after ten minutes or so.

      Something that is often overlooked, be sure to have a keyboard connected when troubleshooting.
      I did the above and nothing yet. Usb sockets aren’t working so keyboard and mouse aren’t connected. My MB is Msi z370 pc pro

      Comment

      • Jog247
        PCHF Member
        • Feb 2021
        • 7

        #4
        The monitors say no hdmi cable is connected when there is one. I tested them on a tv and they do work

        Comment

        • phillpower2
          PCHF Administrator
          • Sep 2016
          • 15209

          #5
          Not looking good and based on the behaviour that you describe a system short is a strong possibility

          Can I ask how it has been determined that the USB ports are not working.

          The USB 3.0 ports on a MB do not work on boot as the BIOS does not have any drivers for them and that is why the black USB 2.0 type ports which the BIOS does have drivers for should be used.

          [COLOR=rgb(44, 130, 201)]Edit to add: Scrap that, just seen them, can you let us know the full CPU details instead.[/COLOR]

          Comment

          • Jog247
            PCHF Member
            • Feb 2021
            • 7

            #6
            I tried all usb ports just to see if a light would come on a usb or mouse and nothing. Does a system short mean I’ll have to replace the motherboard?

            Comment

            • phillpower2
              PCHF Administrator
              • Sep 2016
              • 15209

              #7
              If the board has been shorted out based on what you describe the answer would be yes I`m afraid. I would suggest doing a bare-bones set up before replacing the board though.

              Comment

              • Jog247
                PCHF Member
                • Feb 2021
                • 7

                #8
                Originally posted by phillpower2
                If the board has been shorted out based on what you describe the answer would be yes I`m afraid. I would suggest doing a bare-bones set up before replacing the board though.
                Okay, barebones as in take everything out of the case and basically rebuild it outside of the case? If so I tried this earlier

                Comment

                • phillpower2
                  PCHF Administrator
                  • Sep 2016
                  • 15209

                  #9
                  I would have mentioned that in your OP

                  Comment

                  • Jog247
                    PCHF Member
                    • Feb 2021
                    • 7

                    #10
                    Ok, thanks for your help. I’ll get a new one ordered and let you know once installed and hopefully the issue will be resolved then.

                    Comment

                    • phillpower2
                      PCHF Administrator
                      • Sep 2016
                      • 15209

                      #11
                      You are welcome, sorry that ie was not something that we could help you fix

                      Be sure to do a barebones outside of the case first when you get the new board.

                      Comment

                      • Jog247
                        PCHF Member
                        • Feb 2021
                        • 7

                        #12
                        Will do, thanks for your help. I will donate to the page once it works

                        Comment

                        • phillpower2
                          PCHF Administrator
                          • Sep 2016
                          • 15209

                          #13
                          Most kind of you

                          Comment

                          • phillpower2
                            PCHF Administrator
                            • Sep 2016
                            • 15209

                            #14
                            Any update for us Jog247

                            Comment

                            • phillpower2
                              PCHF Administrator
                              • Sep 2016
                              • 15209

                              #15
                              Thread closed due to lack of feedback from the OP.

                              Comment

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