U disk does not respond when plugged into computer

My computer yesterday or a good, U disk inserted after can be used, today inserted U disk did not respond, did not appear in the drive.

For this I reload the system, insert a U disk prompt "Found new hardware, ... Hardware may not be used normally ", then there is no response, but the U-disk lamp or Flash. I looked under the driver and found that there was a USB drive that was "unknow device" and that my U disk was good and I don't know if this is the driver of the problem.

However, before reloading the system, the driver must be good, why can not use it? Ask what is this problem, how to solve? Thank you!

Reply:

According to your description, U disk appears software or hardware failure is more likely, we suggest that you first in other normal computers (not your this set) Try your U disk, see whether the normal reading.

Because the XP system's automatic integration USB drive, that is, you newly installed XP system, USB system is normal, so should not be the system fault. According to the description of the computer hardware failure is not likely, so the possibility of computer failure is not.

So u disk is the biggest bad possibility.

You can use the software to repair U.

Digression: the current U disk quality generally, the service life is limited. Especially a motley, it'll be good in a few months.