Care to share why you feel you need to hard-reset your Mac?
Also, if you had many apps/documents open when you did the hard reset, booting up from the SL install DVD, running its Disk Utility and doing a Repair Disk would probably be healthy for the drive. Lots of file pointers got nuked and disk corruption leading to missing HDD space may ensue.
It cannot boot from the disk it tried booting from.
"Try Disk Utility
1. Insert the Mac OS X Install disc, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.)
Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.
3. Click the First Aid tab.
4. Select your Mac OS X volume.
5. Click Repair. Disk Utility checks and repairs the disk."
Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.
(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)
When booting in windows you get the logo then the book shuts down I called apple once before and they had me reset the book while holding afew buttons Down and the reset the book and it worked again they said it was a catch all to reset thing back
I should have written the button b
Down to hold but u did not and need it again