How to master reset my computer if I wanted to sell it and if I downloaded OS X 10.8.2, how do I re-install it?

I want to sell my 2010 Macbook Pro so I could afford to buy the new Macbook Pro with Retina display. How do I get it ready to sell? Also, I am getting nervous because my computer is going really slow and it's freezing. I already verified the disks, cleared out my files, trash, and also erased all my history and cookies and such. It is making me nervous, what should I do?
Also, I downloaded the new software, I bought it online through Apple, how do I re-install it onto the master resetted computer?

If you are going to sell your MBP, you should install the OS that it came with. I suspect that would be Snow Leopard in your case. Insert the original Install disk and when you get to the step where you see the menu bar on top, click on Utilities. From the drop down menu select Disk Utility>Erase and erase the HDD. Then continue the install until it is completed.
Ciao.

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<Email Edited by Host>

Call Apple to help reset your Security Question.
http://support.apple.com/kb/HT5699

I backed up my macbook pro using time machine and now my iphoto and itunes are empty. how do I reset the computer to an earlier date?

I backed up my macbook pro using time machine and now my iphoto and itunes are empty. how do I reset the computer to an earlier date? and why would this have happened?

Without more information, I can't tell you why it happened. As to how to restore to an earlier date, please check out the article below. Should help you to restore form a time machine backup.
http://support.apple.com/kb/HT1427

How do i reset my mac completely? I have parental controls and cant seem to get to time machine cause i bought the computer with parental controls on it and they did not have the password. How do i completely reset my macbook pro?

how do i reset my mac completely? I have parental controls and cant seem to get to time machine cause i bought the computer with parental controls on it and they did not have the password. How do i completely reset my macbook pro?

If you have a rescue email address (which is not the same thing as an alternate email address) on your account then the steps on this page will give you a reset link on your account : http://support.apple.com/kb/HT6170
If you don't have a rescue email address (you won't be able to add one until you can answer your questions) then you will need to contact Support in your country to get the questions reset.
Contacting Apple about account security : http://support.apple.com/kb/HT5699
When they've been reset (and if you don't already have a rescue email address) you can then use the steps on this page to add a rescue email address for potential future use : http://support.apple.com/kb/HT5620
Or, if it's available in your country, you could change to 2-step verification : http://support.apple.com/kb/HT5570

How do i reset/restore computer to factory settings???

how do i reset/restore computer to factory settings???

Follow these instructions step by step to prepare a Mac for sale:
Step One - Back up your data:
       A. If you have any Virtual PCs shut them down. They cannot be in their "fast saved" state. They must be shut down from inside Windows.
       B. Clone to an external drive using using Carbon Copy Cloner.
          1. Open Carbon Copy Cloner.
          2. Select the Source volume from the Select a source drop down menu on the left side.
          3. Select the Destination volume from the Select a destination drop down menu on the right
              side.
          4. Click on the Clone button. If you are prompted about creating a clone of the Recovery HD be
              sure to opt for that.
               Destination means a freshly erased external backup drive. Source means the internal
               startup drive.
Step Two - Prepare the machine for the new buyer:
          1. De-authorize the computer in iTunes! De-authorize both iTunes and Audible accounts.
          2, Remove any Open Firmware passwords or Firmware passwords.
          3. Turn the brightness full up and volume nearly so.
          4. Turn off File Vault, if enabled.
          5. Disable iCloud, if enabled: See.What to do with iCloud before selling your computer
Step Three - Install a fresh OS:
     A. Snow Leopard and earlier versions of OS X
          1. Insert the original OS X install CD/DVD that came with your computer.
          2. Restart the computer while holding down the C key to boot from the CD/DVD.
          3. Select Disk Utility from the Utilities menu; repartition and reformat the internal hard drive.
              Optionally, click on the Security button and set the Zero Data option to one-pass.
          4. Install OS X.
          5. Upon completion DO NOT restart the computer.
          6. Shutdown the computer.
     B. Lion and Mountain Lion (if pre-installed on the computer at purchase*)
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                   it is three times faster than wireless.
          1. Restart the computer while holding down the COMMAND and R keys until the Mac OS X
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          2. Select Disk Utility from the Mac OS X Utilities window and click on the Continue button.
          3. After DU loads select your startup volume (usually Macintosh HD) from the left side list. Click
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          4. Set the format type to Mac OS Extended (Journaled.) Optionally, click on the Security button
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          5. Click on the Erase button and wait until the process has completed.
          6. Quit DU and return to the Mac OS X Utilities window.
          7. Select Reinstall Lion/Mountain Lion and click on the Install button.
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Please post a screenshot that shows what you mean. Be careful not to include any private information.
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You have encountered the Activation Lock. If you are trying to activate an iPad or iPhone and it is asking for a "certain" (your word not mine) Apple ID and password, you have encountered the Activation Lock. This is a security feature that prevents thieves from setting up and using a stolen or lost iPad or iPhone. You have no alternative. You must enter the certain" Apple ID and password to use the device. If you cannot do this you will never be able to activate the device and no one can help you do it.

I have 2 ipod touches. I backed up the new one with old's info. The old one will not unlock with the password I had wrote down and I tried my new ones password. How can I reset the old ipod without affecting the new one and how can I unlock the old one?

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How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
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How to master reset my computer if I wanted to sell it and if I downloaded OS X 10.8.2, how do I re-install it?

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