I don't know what on earth happened to my Mac, but it just lagged so bad, so I rebooted it. Then, when I tried to start it up, my Mac is STUCK on the Apple logo, and the spinning wheel! For numerous HOURS. I don't know what the *ahem* happened!

Using MacBook, black edition.

I am using PC (on my Mac) from BOOTCAMP. So the BOOTCAMP disk starts up, but NOT the HD Macintosh one!

Anyone know what the *ahem* is going on?