Older Dell running WinME I have a machine i'm tuning up for a friend. Ran all diagnostics; AV; Spyware utilities etc. Did defrag and scandisk as well. When finished it was still sluggish so i re-seated both RAM sticks as well just in case. Still slow. Then i noticed that the drive had been somehow switched to FAT instead of FAT 32. Just curious , is there malware that could have done this on it's own ? ? She says she hadn't changed anything. Also how to convert it back for her without losing data. TIA, patio.