Question about Dell Dimension 4600 PC Desktop

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Computer won't turn on unless I unplug the Ethernet Cable

Every time I push the power button on my computer it won't respond. If (after pushing the power button) I unplug the ethernet cable it will start up immediately. Additionally, it will occasionally turn on if I unplug the power cable, plug it back in, and quickly push the power button.

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  • EMJeney Oct 12, 2008

    Let me clarify, once I unplug the ethernet cable, I can plug it back in and it will work fine. So, I can still use it, I just have to unplug it (then the computer boots) and put it back in.

  • Anonymous Oct 25, 2008

    I have the same machine and the same problem. It's been this way for at least six months. Starting more recently when I do get it restarted it takes about 30 minutes to load. Not looking to good. I intitally thought it was the Power Supply Unit but I no longer believe that to be the case. With the machine off, a green button will still flash.

  • jaymenator Dec 12, 2008

    I have a Intel DG965WH mobo with integrated nic with the same problem except it won't work at all with the network cable plugged in. I unplug it, power on and all is fine....plug the cable in and it immediately turns off.

    I bought a Linksys gigabit PCI card a month or so ago and things have been fine until yesterday. I now have to unplug the network cable to turn it on then I can plug it back in and it works fine. Really annoying when you find your media center pc can't record tv because windows update had a patch that needed a restart.

    The only other thing I can think of is maybe my workgroup switch is having some power fluctuations and the mobo doesn't like it. I think it's a stretch since my xbox and ps3 havn't had any issue but I'll try swapping out the switch and post my results.

  • Anonymous Mar 30, 2014

    when the power button was pushed the computer would not come on. I unplugged and waited for several minutes then pressed the power button on the tower again and it came on. this is the second time this has happened.. What could cause this problem?


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  • 4,338 Answers

Is the Ethernet built-in on the system board? I would go to BIOS (hit F2 while booting the PC) and disable the ethernet. then restart the PC. See if it stays on with or without the Ethernet cable plugged in. If it does. The built-in Ethernet circuit is the problem. I would buy a Ethernet adapter ($20).and install it. and leave the built-in ethernet disabled.
If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe

Posted on Oct 12, 2008

  • JDTec
    JDTec Oct 12, 2008

    What I am saying is that there may be a problem with your PC's built-in Ethernet circuit. And the only way to isolate it is to follow my instructions in the solution I sent.


  • JDTec
    JDTec Oct 12, 2008

    What I am saying is that there may be a problem with your PC's built-in Ethernet circuit. And the only way to isolate it is to follow my instructions in the solution I sent.



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