OS: Win XP SP3
Vaio VGN-FE790G laptop

I just noticed this when I used my friend's flash drive. It gave me "Windows - No Disk." After some trouble shooting/reinstalling driver it turns out that the culprit is the driver F. Specifically the MemoryStick0 Device. I don't want to assign drives left and right, so do you guys have the link to the MS program that restores the drive letter assignments to default? The program checks for errors and so on, I've used it before but can't find it anywhere. Thanks.

Edit: Problem solved.