How to Erase an Activity From a MacBook

Click the 'Apple' icon at the top of the screen, and move your cursor to 'Recent Items.'
Click the 'Clear Menu' tab from the pop-up menu.
Open your Safari browser by clicking the icon on your dock, or open your 'Applications' folder in Finder and double-click the 'Safari' icon.
Click 'Safari' at the top of the screen, and click 'Reset Safari' from the drop-down menu. Check all of the boxes to remove all of your temporary Internet files, history, cookies and autofill text. Click 'Reset.'
Open your Firefox browser. Click 'Tools' at the top of the screen and click 'Clear Recent History' from the drop-down menu. Click the drop-down list and change it from 'Last Hour' to 'Everything.' Click the 'Clear Now' button.
Click 'Firefox' at the top of the screen and click 'Preferences' from the drop-down menu. Click the 'Advanced' button and click the 'Clear Now' button located under the 'Offline Storage' section.
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How to Restore System Preferences (14 Steps)

Click the 'Finder' button.
Click the 'System' button.
Click the 'Library' button.
Click on 'PreferencePanes' and try to locate your file in the menu.
Restore the file to the proper place on your computer if you find it.
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How to Update the Drivers in a MacBook Pro 8600M GT

Click the Apple button in the upper left corner of your MacBook Pro screen. Select 'Software Update...' from the menu that appears. Your Mac will check for available updates, including video card drivers.
Select 'Show Details' in the window that appears to see a list of updates. If there is a driver update available for your Nvidia 8600M GT video card, you will see it on the list. All available updates are checked off for installation by default, but you can uncheck any you don't want to install.
Press 'Install Items' at the bottom of the window. Mac OS X will install the updates you selected, including new video card drivers. Your MacBook Pro may prompt you to enter a password, and you may need to restart your system after installation.
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How to Replace the RAM in a MacBook Pro (11 Steps)

Shut down your MacBook Pro. Remove the external cords, power adapter, Ethernet cable and any peripherals.
Allow your computer to cool down for 10 minutes if it has been on. The metal components inside the MacBook Pro can be hot to the touch.
Turn the computer over and open the battery cover release the latch on the computer's bottom. Push the latch in and pull it up. Lift the battery cover off.
Pull up on the tab on the back of the battery. Lift it up to loosen it, then pull it out.
Remove the four screws along the battery compartment with a size 00 screwdriver. Place the screws in a safe place. Remove the four screws near the hinge side. Make a note of where the screws go back into the body of the computer.
Lift the back cover off the computer and locate the memory module in the center of the computer.
Discharge static electricity from your body by touching a metal surface inside the computer.
Remove the existing RAM by pushing out on the retaining clips to release the first module. Remove the RAM, then release and remove the second module.
Hold the new RAM card at a 30-degree angle. Line up the notch in the RAM card with the tabs that are located in the memory slot. Slide the card into the bottom slot, then push down on the outer edge until it clicks into place. Repeat the process with the second module in the top slot.
Place the bottom cover back on and replace the screws into the holes, beginning with the hinge edge. Replace the remaining screws near the battery compartment.
Replace the battery and the battery cover. Close the latch on the back. Turn the computer over and turn it on.
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How to Print Remotely From a MacBook Air

Connect your Wi-Fi printer to the network by entering your network name and password through the printer's menu. To use printer sharing, connect a printer without Wi-Fi to another Mac. You will need to enable sharing before the printer can be discovered by the MacBook Air.
Enable sharing of the networked printer on the computer it is connected to by clicking the Apple menu, then 'System Preferences' then 'Printer & Fax.' Click on the printer from the list and select 'Share this printer.'
Navigate to the 'Printer & Fax' menu on your MacBook Air. Click 'Add' to set up a printer. Click 'Default' to search for the Wi-Fi or shared printer. Select the printer and click 'Add.' Now when you print something, you can choose the printer from the drop-down menu of the prompt.
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How to Transfer a Rented iTunes Movie Library

Open iTunes on your computer.
Connect the iPod, iPhone, iPad or Apple TV to the PC.
Click on the device in the 'Devices' sidebar of iTunes.
Click the 'Movies' tab if you are transferring to an iPod. Click the 'Videos' tab if you are transferring to an iPhone, iPad or Apple TV.
Select the rental you want to transfer. Then click 'Move.' Repeat this for every rental you want to transfer.
Click the 'Apply' button in the lower right corner of the iTunes window.
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How to Right Click in Parallels (11 Steps)

Click the 'Apple' icon at the top-left corner of your Mac OS X desktop.
Click 'System Preferences' in the menu that appears.
Click 'Mouse' in the System Preferences window.
Click the 'Secondary Click' checkbox under 'One Finger' in the Mouse window if it's unchecked.
Click the drop-down box to the right of 'Secondary Click' and click 'Right' in the box.
Click using the right side of your mouse in the Parallels window.
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