Hi, I have a problem. My brand new MBP C2D has NO audio! When i first got it, i started it up, and the sound worked perfectly! However, a day after, my audio just dissapeared! If i got to "about this mac", under built in audio: it shows "no built in audio". My MBP does not make ANY sounds at all (no boot chime, no soundfx, no music, nothing. silent in a bad way). I've searched be boards but found little to do w/ my particular problem. here's what i have tried but w/ no luck: 1. reset PRAM 2. reinstall OSX 3. create another account 4. load up garageband (says: coreaudio: selected driver not found (-10202) 5. searched in spotlight for 'com.apple.audio.devicesettings.plist' and move to desktop then reset 6. plug in usb speakers, then remove (usb speakers work fine! but nothing still from built-in sound) 7. run the hardware check thing (both quick + extensive) 8. uninstall bootcamp 9. cry. Is there anything else I can try? i'm pretty new to macs although i was using my dad's old pbg4 Ti before making the switch from MS. If i do have to send it for repairs, will i have to mail it out? or can I just go to any authorized mac dealers (westworld computers, or simply computing in Vancouver, BC canada?). Please advise me! I would really appreciate it! @ this point i feel helpless and extremely disappointed. I love my MBP, and there are no other problems besides this. I just feel so annoyed that my brand new $2000+ laptop isn't working properly!!