How to Unlock an Apple Laptop When the Password is Lost

Put the Mac OS X Install disc into your Apple laptop. This should be the same version currently installed on your computer.
Find the 'Install and Restore' icon and click it.
Choose your language and select the arrow button.
Select the 'Utilities' menu or the 'Installer' menu, depending on your version.
Select 'Password Reset' or 'Reset Password,' depending on your version.
Find your Mac OS X hard disc volume from the 'Reset Password' window. If you're the only computer user, there should be only one option.
Select your account from the dropdown menu. Again, if you're the only user, you'll only see one option.
Enter and confirm a new password for your Apple laptop. Click the 'Save' button to save your new password.
Find the red button in the left hand corner of the 'Reset Password' window. Click it to close the window.
Select the 'Mac OS X Installer' and click 'Quit.'
Click 'Restart' to restart your laptop. You will then be able to enter your new password to unlock your system.
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How to Unlock an Apple Mac Book Password

Locate the Mac OS X install disc your computer came with. If you don't have it, you may be able to get another one from Apple by calling (800) SOS-APPL. (You will most likely have to buy another one.) Insert the disc into the optical drive.
Restart the computer while holding down the 'C' key. A 'Utilities' or 'Installer' menu will appear, depending on which version of OS X you are running. Select 'Reset Password.'
Select 'Macintosh HD' from the available volumes. On the drop-down menu, select the name of the original administrator account. Do not select 'System Administrator.'
Choose a new password and enter it in the two fields. Click 'Save.'
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How to Wipe a Hard Drive on a Mac (8 Steps)

Insert your Mac OS X Install or Software Restore CD into your your computer's disk drive, and restart your computer, holding down the 'C' button.
Choose your preferred language and click 'Continue.'
From the menu bar in the Mac OS X Installer window, choose 'Disk Utility.'
On the left-hand side of the Disk Utility window, select your hard drive, and on the right, choose the 'Erase' tab.
From the 'Volume Format' drop-down, choose the 'Mac OS Extended (Journaled)' option.
Type a new name for your hard drive in the 'Name' field and click the 'Security Options' button.
From the Secure Erase Options, choose either the '7-Pass Erase' or the '35-Pass Erase'. Both options will overwrite your data with zeroes several times, and both provide a very high level of security. Click 'OK.'
Click 'Erase,' and confirm that you want to erase the drive. Wait while Disk Utility unmounts, erases and renames your hard drive. This will take several hours if you chose the 7-Pass option, or nearly a day if you chose the 35-Pass option.
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How to Adjust iSight on MacBook Settings

Navigate to Ecamm.com/mac/iglasses/settings.html and download the iGlasses installer. If you do not want to purchase iGlasses for $9.95, you can download a free demo to test it out for seven days.
Double-click the ZIP file to open the iGlasses Installer or iGlasses Demo Installer. Double-click the installer icon.
Click “Install” and then click “Accept” to accept the iGlasses License Agreement. You must accept the License Agreement to install iGlasses on your MacBook.
Enter your MacBook administrator password when prompted by the installer and then click “OK.”
Click “Open iChat” after the installation is complete.
Select “Video” in the top menu bar and then select “Video Preview.” You will see a small window with your iGlasses settings.
Click the “Standard” tab in the iGlasses window to select a preset configuration.
Click the “Brightness” tab in the iGlasses window to select which settings you would like to change. iGlasses lets you adjust brightness, color, contrast, hue, saturation, sharpness, white balance, threshold and zoom.
Click the slider and move it to the left or right to adjust any of the settings.
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