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Old 06-01-2009, 09:45 AM   #1 (permalink)
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Default external harddrive wont work

For some reason since i changed mothereboards to this gigabyte none of my 2.5" external hard drives will work in the front or back usbs. They work fine with a 8GB usb memory stick. The computer picks up that the drive has been plugged in, but then errors saying the device cannot be regonised. It does this for both 80GB drives i have. i know the drives work fine because i regularly use them with my laptop and work pc.

the only thing i can think off that might be causing it is a lack of power from the usb ports, could this cause it? anything else that might be the cause?
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Old 06-01-2009, 11:18 PM   #2 (permalink)
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Default Re: external harddrive wont work

Shouldn't be lack of power, since usually external hard drives have their own power source. Do the drives spin up? If so, do they show up in the compmgmt.msc?

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Old 06-02-2009, 04:08 AM   #3 (permalink)
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Default Re: external harddrive wont work

plug the drive in, go to the Device Manager, and to the USB hubs. Browse through them until you find the one which the HDD is connected to. There'll be a 'Power' tab, check in that to make sure the drive is getting enough power if you're worried about that.
It should list how much the drive needs, along with how much it's getting.
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Old 06-02-2009, 09:51 AM   #4 (permalink)
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Default Re: external harddrive wont work

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Originally Posted by dipique View Post
Shouldn't be lack of power, since usually external hard drives have their own power source.
Dan
because these are just 2.5" drives they take all their power from the usb port. I installed windows 7 last night on it so ill give them a go in that when i get home.
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Old 06-13-2009, 05:53 AM   #5 (permalink)
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Default Re: external harddrive wont work

windows 7 didnt make any difference, still cant pick the drive up. Ive had to copy the video files to my laptop then send them across the wireless network which is taking bloody ages :-(
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Old 06-13-2009, 06:09 AM   #6 (permalink)
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Default Re: external harddrive wont work

what did device manager say about the power settings for the usb hub that the hd is connected to?
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Old 06-13-2009, 09:51 AM   #7 (permalink)
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Default Re: external harddrive wont work

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Originally Posted by Hefemeister View Post
what did device manager say about the power settings for the usb hub that the hd is connected to?
Sounds like a power issue to me, too. Maybe try it on a different computer first and then see if you can adjust the voltages in bios?

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