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  1. #1
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    Default USB device over current detected

    I shut down my computer yesterday after it was running normally. I turn it on today and I get the below message on screen after booting:

    USB device over current status detected!!
    System will shut down after 15 seconds.

    I do not regularly use my USB ports and haven't touched them for about 2 weeks. I have looked up error and tried the below with no luck :

    - removed all USB devices
    - blow out USB ports
    - visually check ports for damage, nothing obvious found
    - Breadboard by taking motherboard out of case with all USB ports empty, left 1 stick of ram, left gfx installed, and installed motherboard speaker.

    I still got the USB over current error and computer shut down after 15 seconds.
    Only after removing all ram did the computer not shut down after 15 seconds, but I also did not get any display.

    When the computer did boot and display when ram installed there was slight artifacts but dissappeared when the USB over current error messages displayed.

    What else can I do? Is it likely the motherboard is the issue?

    Can I some how disable the USB ports?

    I have a an Asus P5q E motherboard.

    Any help or advice would be appreciated.

  2. #2
    tweakedgeek tweak'e's Avatar
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    Default Re: USB device over current detected

    often you can disable usb ports in the bios.
    Tweak it till it breaks

  3. #3
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    Default Re: USB device over current detected

    Quote Originally Posted by tweak'e View Post
    often you can disable usb ports in the bios.
    Yes but I am unable to access the bios before the computer shuts down after 15 seconds

  4. #4
    tweakedgeek tweak'e's Avatar
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    Default Re: USB device over current detected

    i'm guess new board then.
    i assume a search has not turned up any known issues or work arounds.
    check all the leads make sure there is nothing shorting. unplug any front usb ports. check no shorts or dust etc across the front (not used) usb pins.
    Tweak it till it breaks

  5. #5
    amateur expert dugimodo's Avatar
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    Default Re: USB device over current detected

    It's a pretty old board could just be a component on it has failed and is effectively shorting out one of the USB ports. Capacitors fail most often but other components can too, you might be able to see physical signs if you look around the board near the USB ports. Don't forget the headers for front panel usb whether you use them or not.

    Personally though I think it's time to look for a replacement, odds are it's done and not worth fixing. My google search indicates it's around 12 years old, that's a good run for a PC.
    Ryzen 2700X, 16Gb DDR4RAM, 512GB M.2 NVME SSD, MSI GTX1070

  6. #6
    Computer "Specialist" Agent_24's Avatar
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    Default Re: USB device over current detected

    It could well be a shorted ceramic capacitor on a USB port's power rail. (Ceramic ones like to fail shorted).
    Or a faulty overcurrent detection circuit, perhaps.

    If you can get, or have, a USB voltage checker, you could test all the ports and see if you can find one that's reading low or shows nothing.

    Then look in the area for that port, for discolored components, If you don't actually need to use the port, you could just remove any shorted capacitors and leave it unused.

    Bear in mind some USB ports are only supplied with headers for front panel connection etc, so you'd have to plug actual ports into them to use a tester. Or just use a multimeter.

    (Speaking of, you didn't put any jumpers on any headers without checking they were not USB ones?)

    Probably a hassle to look for shorted parts if you're not familiar with such things but could be a way to avoid buying another board straight away.

  7. #7
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    Default Re: USB device over current detected

    Quote Originally Posted by dugimodo View Post
    It's a pretty old board could just be a component on it has failed and is effectively shorting out one of the USB ports. Capacitors fail most often but other components can too, you might be able to see physical signs if you look around the board near the USB ports. Don't forget the headers for front panel usb whether you use them or not.

    Personally though I think it's time to look for a replacement, odds are it's done and not worth fixing. My google search indicates it's around 12 years old, that's a good run for a PC.
    Yes it's an old board, but i have spare parts for the LGA775 era of boards, so I'm trying to make use of these components. I'm currently running two systems with LGA775.

    I have since replaced the P5Q-E with a P5Q-PRO, which is working great as of now.

    The USB headers look fine to me, all I can do is give a blow down. I may have a proper look another time.
    If it is a capacitor that has failed then its probably beyond me to find and replace it.

  8. #8
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    Default Re: USB device over current detected

    Quote Originally Posted by Agent_24 View Post
    It could well be a shorted ceramic capacitor on a USB port's power rail. (Ceramic ones like to fail shorted).
    Or a faulty overcurrent detection circuit, perhaps.

    If you can get, or have, a USB voltage checker, you could test all the ports and see if you can find one that's reading low or shows nothing.

    Then look in the area for that port, for discolored components, If you don't actually need to use the port, you could just remove any shorted capacitors and leave it unused.

    Bear in mind some USB ports are only supplied with headers for front panel connection etc, so you'd have to plug actual ports into them to use a tester. Or just use a multimeter.

    (Speaking of, you didn't put any jumpers on any headers without checking they were not USB ones?)

    Probably a hassle to look for shorted parts if you're not familiar with such things but could be a way to avoid buying another board straight away.
    Yes it's possible it's a capacitor issue, but replacing it would be a little beyond me and probably not worth messing with.
    I also did think it was a false over current error too, but not sure what I can do about that.

    But if I were to remove a capacitor would I have to replace it with another? Like I wouldn't think just removing it and leaving as would be a good idea?

    I have not touched any jumpers at all.

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