Please Help!!!!!

[gmanv1.5]

My computer wont recognize my psp when i plug it in with the usb. It worked find before then all of a sudden it gives me a message that its an unkown device and that i need a usb driver. Any help would be greatly appreciated. :(

[*o*]

what operating system are you using?

[gmanv1.5]

windows xp

[*o*]

try formatting your memory stick