USB problem.

my config:-

amd athlon64 x2 3800+,
asus m2n pv-vm,
1gb ddr2 667mhz transcend ram,
yamaha ds-xg soundcard,
onboard geforce6150

this rig is only a month old,

i have a 128mb intex pendrive, it worked fine at first but now an error saying "Unknown device",

but the pendrive works fine on my friends pc,

and when i view the device manager, under the PCI Bus theres an Unknown Device,

i even reinstalled xp, but to no avail,

what driver should i put? since i have SP2 usb driver is not required right?

im really worried sick abt this pc cos its just a month old not to mention the prob with that harry potter game i mentioned,

plz help.

[gauravakaasid]

re-install the usb drivers, make sure u have windows installation cd as well as ur mobo cd