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Usb port power surge

by Impozter / January 10, 2010 8:33 AM PST

Hello, I have an(E.H.D) external hard drive enclosure and when I plug it(into the back) in I get an alert. Power surge on usb port. It will not recognize it and does not show up on my pc anywhere. This use to work fine on this computer? The hard drive works fine on my other computer. I have 6 usb ports 4 in back connected to the M.B, and 2 in front. When I plug the E.H.D. into the front it does not power surge and shows up in the device manager as a mass storage unit. It also says that there is no driver installed. The driver for this is built in so I cant install it, besides it works on my other computer. I can not access the E.H.D at all. It should show up as a 40gb hard disk right below my local hard drive when you go to "my computer". The computer and all six usb ports seem to be working normally except when It come to the E.H.D???

I think it might be the ---motherboard,power supply, a setting,

Got any ideas?

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Not sure
by Impozter / January 11, 2010 4:27 AM PST
In reply to: Usb port power surge

Well, I think its something else now? I have a 4gb flash drive and it also gives me a power surge alert. What would make the 4 usb ports built in to the motherboard not have enough power? For a flash drive. I unhooked everything but the DVD,CD, hard drive and mother board. I even took out my graphix card. Is there a fuse or a switch in the M.B. or power supply that could be doing it? My power supply is on the 115 setting and not the 230. The PC wont turn on when set to 230. Maybe my power supply is have burned out?

Thank you

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Maybe this is it?
by Impozter / January 11, 2010 4:31 AM PST
In reply to: Not sure

I asked the same question in another forum, this was Diane's answer


(Quote:DIANE) It means the HD draws too much power for a USB port combined with other devices on the USB port and the computer has shut the port off, which is why you can't see the drive.

The easiest solution is use an AC adapter if possible for the drive, or plug it into one of the ports that does not show the issue. There are far more complicated ways to go into device manager and see which items are on which USB ports, but you might not want to dig that deep.

Diane (end quote)


I thought that it was a bad solution, and got me thinking???

Hows this sound? When you get a power surge alert-----
1. It says to remove what caused the alert
2. It gives you the option to reset the port or close the window
3. If you close the window and dont reset, THE PORT STAYS OFF

Maybe when it first happened, I didnt reset the ports and there just off. That would confuse me, and make me think that it keeps surging, BUT ITS REALLY JUST TURNED OFF!

Any advice on how to turn the ports back on?

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