This issue sounds like a drivers problem. I have had similar issues with my USB Tablet before, and getting the latest drivers helped.

If you are getting issues with a pen drive, which should work by default, I suggest getting hold of XP SP2 and installing it. I know you may have a copy of Xp with SP intigrated, but applying a service pack can resolve issues like this. Other than that please install SP3.

https://www.microsoft.com/downloads/d...displaylang=en

Use that link to get the install.