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USB device not recognized

According to my laptop, oen of the USB devices attached to this computer has malfunctioned, and windows does not recognize it. Its connected to USB Root Hub (2 ports) and it is stated as UNKNOWN DEVICE. I've run a memory test on my laptop and no memory errors were reported.

If i go to my device manager, one of the partitioned drives on my EHDD is stated but with an exclamation mark. I had partitioned my EHDD into two - 40 gigs each.

I do not think its my cable ( i guess)...How do i solve this?

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  • wesseavey Aug 17, 2008

    Hi...,

    I have the same problem. The drive is about 6 months old, and I've tried the fixes you offered, but none worked. It may be the drive is defective I suppose.

    I've tried using the back usb connections, and it is not showing in device manager. I haven't tried connecting to two usb ports? I'm not sure how I could do that. I haven't seen a splitter, and the hubs I have only have one usb out. I just replaced the power supply with a 450 watt model, ...but I don't see how that could be an issue. Can you help? Thanks...

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Hi,
if it,s showing in the device manager as an exclamation mark. that means it,s found it, but can,t recognise it.
i,d suggest formatting and partitioning it, with some good software. also ensure that it,s powered via 2 usb cables to laptop, from 1 on the drive itself. some bigger hard-drives, need the extra power to drive them.

Mike @ compurepair.

Posted on Jul 25, 2008

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