Re: External USB Drive not detected

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance


"Hagar" <hsahm@xxxxxxxxxxxx> wrote in message
news:Cs-dnakrc_Uj1NjUnZ2dnUVZ_vednZ2d@xxxxxxxxxxxxxxx
I installed a Maxtor (Seagate) 500GB external USB drive on my wife's
machine. She runs XP Home Edition/SP2. The drive was detected and assigned
a drive number (G). I copied a few JPG file to it and could view them. My
wife then installed the backup software that came with it. She then shut
the machine down for the night. The next morning, the drive (G) was gone.
I attempted to re-install it, but the PC would not recognize it. The "New
Hardware Detected" window popped up, then another window popped up:
"USB device recognized. One of the USB devices attached to the computer
has malfunctioned and Windows does not recognize it. For assistance etc.
..."
I then plugged a regular 2G memory stick into the same port, with the same
results. The computer would not recognize it. In Device Manager it shows
it as "Unknown Device" under the USB listing. I even "uninstalled" it,
shut down the PC, unplugged the power cord for 2 minutes and tried it
again, with the same results.

I tried it on a USB port on the installed PCI card (with 2 ports) as well
as one of the ports on the mother board, with the same results.

When connected the 500GB drive to my machine (also running XP Home
Edition/SP2) it works fine, and shows up in device manager as 'USB Mass
Storage Device", with the driver identified as "usbstor.sys".

So, the Maxtor drive seems to be ok, but the wife's machine has trouble
recognizing any USB devices, even though the USB printer, Mouse and
external hub are working correctly.

Any suggestions ???

TIA,

Hagen Sahm.


I would try a System Restore to return your wife's machine to the condition
it was in before you installed the backup software. Don't neglect the
possibility that you might have a defective USB port or controller and that
it happened to fail more or less at the same time as you installed the
backup software. A technician in a computer shop would be able to test the
port without having to rely on your Windows installation.


.

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