How to Reinstall Photo

Insert disc one from your Mac OS software bundle into the computers optical drive. Disc one is labeled as the 'Mac OS X Install DVD.'
Double-click the 'Optional installs' folder on the Mac OS X install pop up menu. The menu will automatically pop up once you have inserted the disc into the optical drive.
Double-click the 'Optional installs installer' on the next window. When the optional installs installer screen pops up, click 'Continue.'
Click 'Continue' on the software license screen. Read through the terms of agreement on the next page and click 'Agree' when you are finished and agree to accept the terms.
Click 'Photo Booth' as the item you want to install. To reveal the full list of programs, click the triangle icon next to 'Applications.' Click to check the box next to Photo Booth then click 'Continue.'
Modify the install location on the next screen if you wish to designate a different location. Once finished, click 'Continue.' When prompted, enter in your administrator password and click 'Install.'
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How to Reinstall iChat

Insert the Mac OS X Install DVD into your disc drive.
Double-click 'Optional Installs.mpkg' to launch the optional components for the operating system.
Click the arrow next to 'Applications,' and select 'iChat' from the list.
Click 'OK' and then 'Install' to reinstall iChat to your Mac computer.
Eject the Mac OS X Install DVD once the package install is complete. You will now find iChat located in the 'Applications' folder.
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How to Restore My Macbook to Factory Setting

Deauthorize your iTunes Store account if you're getting rid of your computer. Since only five computers can share the same iTunes account, you should always deauthorize a computer you no longer plan to use. Open iTunes, click “Store” and select “Deauthorize This Computer.” Enter your Apple ID and password when prompted and click “Deauthorize.”
Deauthorize any other software that limits your license to a certain number of computers, such as Photoshop or Lightroom. Refer to your owner's manual or the application's Help menu for the steps to deauthorize your account.
Back up your current installation to an external hard drive. This step is optional, and if your system isn't working properly, you should back up only the files you want to transfer to your new system. To clone your hard drive, connect an external drive to a USB port and open Disk Utility. Select “Restore,” then drag the internal partition to the Source field and the external partition to the Destination field. Select “Erase Destination” and click “Restore.” This process destroys all the data on the external partition, so use an empty disk or partition to store your backup.
Reboot your system into OS X Recovery. Click the “Apple” menu and select “Restart.” While your computer is restarting, hold down “Command-R” to boot into OS X Recovery. If you need to connect to a Wi-Fi network after booting into Recovery, click the “Wi-Fi” menu, select your network and enter your password when prompted. If you're connected to a wired network, Recovery automatically detects your Ethernet connection.
Select “Reinstall OS X” and click “Continue.” The recovery process requires an Internet connection to download the necessary files for restoring your Macbook. If you're restoring your computer to an upgraded version of OS X, Recovery prompts you to enter your Apple ID and password before downloading the installation files. Since the download copies about 4GB of files to your computer, it can take over 30 minutes with a high-speed connection.
Click “Restart” when the installation finishes. Your Macbook reboots into a fresh installation of OS X, and all your settings are restored to factory defaults.
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