I tried formating my USB flash drive as always (it's a 4g Konval thing) on standard settings. When it got to about 75% the computer restartet and now it's 0 bytes and RAW. I can no longer format it in windows, what do I do? Btw it's windows vista. Tried format from the command promt and it startet now it's stuck at 68% checked. What do I do?