Running Windows 7 and Im haveing the same problem as above. Says my USB stick isnt formatted fat fat32 or ntsf and therefore not valid. I have tried the above fixes and yet I still have the issue. Can someone explore this further? LMAO UPDATE: Used the PE GUI Interface and walla. It sees me now... Thats after I have done all the above fixes... Now lest see if I get a successfull boot instal ;p