i did the same thing and poof*** no more launchpad ANDunlike you i couldnt access the usb at all..
i just bought it so i was ready to walk back into the store saying it was glitched or something.
i distinctively remember the lil booklet saying that you couldnt get the u3ishness back
neways thanks alot and your a life saver
*however i did like the ativa launchpad screen better*