iBook won't shut down or restart
I havent been able to shut down or restart my iBook! A friend of mine used my computer and I didnt know she stuck in one of those USB plug-ins (sorry, I dont know what its called) and pulled it out without ejecting properly and since then I see this disc logo marked "CDR" on my desktop that won't eject no matter how many times I drag it to trash and now just realized I can't shut down or restart my iBook. Help!!!
Many thanks!
17" iMac 2.0GHz Intel Core 2 Duo, 12" iBook 1.2GHz PowerPC G4 + iSight, Mac OS X (10.4.8), iPod with color display 20GB + dock + camera connector, iPod shuffle 1GB