FAT is corrupted

[Gobles]

I am at a loss for the sansa fuze 8gb; couple of issues here. I am only showing 2gb internal and external when viewed through my computer. Upon power on, I get the flash screen and it shows connected, then it goes to an error screen which states," FAT is corrupted. Please connect device to PC and recover FAT". Then it shuts down. I tried to factory reset(holding the on slider up for 20seconds), and it worked or appeared to reset it;
still same result, tried reformatting both internal and external drives with windows(can not access internal menu), both formatted but still same error. I do not know what to do, I am using vista and the main unit still is not recognized as sansa fuze only as removable disk drives. The updater, (what a piece of....) never finds the fuze or any updates for it. I am not able to access the menu on the Fuze either to change modes or anything. Any suggestions would be greatly mind easing and helpful, thank you in advance