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Usb Ports Keep Quitting


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#1 BlackAngusYoung

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Posted 13 August 2008 - 02:37 PM

Things plugged into any of my computer's USB ports seem to disconnect on their own and then connect again only a second later. It happens with my external disc writer and my external hard drive, whether they are just turned on or actually being used. (Both of these units work very well on other computers.) It happens with all front and back ports as well as with powered and non-powered USB hubs.

Can anyone tell me what could be wrong or what to check for? I have a program called PC Wizard 2008 which might provide some helpful information. I wonder if it could have something to do with maximum packet size or something else I don't understand. Or if I might just need more RAM.

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#2 LynnKnows2

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Posted 13 August 2008 - 03:02 PM

Hey! The amount of RAM that you have wouldn't have anything to do with your USB ports cutting in and out. It could be that there's a loose wire, or a connection that isn't tight. If you have a USB hub, try plugging that into the computer, and the other stuff into the hub. See if that makes any difference.

#3 hamluis

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Posted 13 August 2008 - 04:21 PM

You might also check Event Viewer for possible useful clues about the USB problem.

How To Use Event Viewer - http://www.bleepingcomputer.com/forums/t/40108/how-to-use-event-viewer/

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#4 BlackAngusYoung

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Posted 13 August 2008 - 05:15 PM

Hey! The amount of RAM that you have wouldn't have anything to do with your USB ports cutting in and out. It could be that there's a loose wire, or a connection that isn't tight. If you have a USB hub, try plugging that into the computer, and the other stuff into the hub. See if that makes any difference.


I get the same problem with or without the hub, so I think it has to be the computer. Do you think it's more likely that it's a physical problem like a loose connection than something being programmed wrong?

#5 nkfro

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Posted 13 August 2008 - 06:17 PM

Hey! The amount of RAM that you have wouldn't have anything to do with your USB ports cutting in and out. It could be that there's a loose wire, or a connection that isn't tight. If you have a USB hub, try plugging that into the computer, and the other stuff into the hub. See if that makes any difference.


I get the same problem with or without the hub, so I think it has to be the computer. Do you think it's more likely that it's a physical problem like a loose connection than something being programmed wrong?


The USB ports plug directly into the motherboard. The rapid cycling you describe isn similar to problems I had on a different computer a few years back. Pulled the connector off of the motherboard, plugged it back in and the problem was solved. The pins had developed an oxide coating (very high resistance connection). Pulling the connector and remaking the connection cut through the oxide layer.




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