i have a 3gs that won't turn on, no Apple logo, no backlight...straight dead. i have tried all of the "button hold" combinations--nothing (however, Windows does beep on and off when I'm holding these buttons, so it does detect something). plug it into the computer and iTunes does recognize it as a phone in recovery mode..however, restore will not work. any suggestions? currently, my error message is 3194. i have tried editing the host file as well, but to no avail.