I installed the newest Rockbox for my iPod 80GB video today. Also added some fonts and themes downloaded from this site. First there were some issues with the playback, it did just show the filename and did not play the song. I restarted and everything worked fine. Then I stopped playback and shut down the iPod. Now it won't turn back on. No apple logo, nothing. The battery isn't dead, the computer won't recognize it, the ipodpatcher.exe won't find it. Any ideas?