I accidentally removed the partitions xyz on my hard drive. Then at that point the xbox (I have unleashx dash) reboots to the unleashx logo then goes to the dashboard wen i try to launch any xbe's. Then my brother launched vice city. When he rebooted the xbox, it goes directly to the xbox live logon screen.I cant get out of this screen. If i press a, nothing happens, then if i press be the screen whites out then goes back to the same screen. What can i do?