SOURCE: Buffalo USB 25gb external hard drive
There is probably just a bad connection between the usb and hard drive. Unplugging it and plugging it back in. If that doesn't work try another usb port. That usually fixes the problem.
SOURCE: IBM T21 usb issue
u have to install drivers for usb connections.
i guess u have 98 version of windows. if u have windows 98 operating system u have to have install drivers for every USB devices.
feel free to ask me questions regarding this answer
chirag
SOURCE: Unknown Device
I am also facing the same problem, but with my harddisk I have tried everything, Can you suggest something.
SOURCE: My computer does not recognize flip video F 260 ultra camcorder
do u have the driver cd which came with the product. else go to the web site of the company locate the driver and load it on ur computer.
SOURCE: In the "Unknown Device" it
Hello!
Your Operating System doesn't recognize your USB because it does not have a compatible driver for it, the best solution for that is to install the driver of your USB. And make sure also that in the BIOS settings the USB port is ENABLE, that could be the reason why your USB is not recognize. To do this or to view BIOS settings, while your computer is booting press DEL / F2 key.
Hope I was able to help.
known problem, that might be fixed by a cold start. switch off your PC or laptop completely. even pull the power lead from the wall, (in laptop remove power supply and battery once switched off) wait a few minutes and power up and start your machine.
I hope this was helpful
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