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"No Entry" sign at boot.

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Hi.
Problem as of an hour ago. Found my screen dark but MBP not asleep. Tried to get screen lit by pressing some keys. Finally, I pressed the Power to reboot.
I discovered that when I try to boot the MacBook Pro (OSX 10.6.6) the grey apple logo changes to a "no entry" symbol and the grey segmented icon whirls around.
Disk permissions have been repaired from installation disk and the repair disk proceeded with no problems. Same "no entry" sign appears after retry.

Recently, my Time Machine backups since I began in July 2009 were unusable and unrepairable with any Apple tools or Disk Warrior. No usable backups. Hmmmm.

Naturally, I could use some help with this. I'd like to be able to boot my MBP.

15 2.33GHz MBP (maxed), Mac OS X (10.6.6), AirPort, 9x12" Wacom tablet, 23" Cinema Display, 0.9TB RAID, more...

Posted on Mar 24, 2011 7:29 PM

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"No Entry" sign at boot.

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