How to Disable Sleep Mode on a MacBook (8 Steps)

Click on the 'System Preferences' icon in the dock on the bottom of the screen.
Click on 'Energy Saver' (lightbulb icon) in the System Preferences window.
Click and hold the slider on the sliding scale labeled 'Put the computer to sleep when it is inactive for:' and slide it all the way to the right, to 'Never.' This sets the sleep preference for your current power source, either battery or power adapter.
Click on the drop-down menu labeled 'Settings for' at the top of the window, and select the power source you are currently not using. Then repeat step 3. This will ensure that your Macbook will not go to sleep on its own whatever power source you are using.
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How to Set Up a Blank Page for Letter Writing on a Mac Computer

Go to the Applications folder and double-click the 'TextEdit' icon. TextEdit will open with a new, blank document.
Type the return address at the top of the document. Put the name on one line; the street address on the next; and the city, state and zip code on the third. Hit the 'Return' key twice.
Enter the date and hit the 'Return' key twice.
Type the address of the letter. Put the name on the first line; the street address on the next; and the city, state and zip code on the third. Hit the 'Return' key twice.
Enter a salutation for the letter. Hit the 'Return' key twice.
Add the body of the letter, leaving a space between any paragraphs. Hit the 'Return' key twice after the last paragraph.
Insert a complimentary close, such as Sincerely or Best regards, and hit the 'Return' key three times. The extra space gives you room to sign the letter once you print it.
Type your name to finish off the letter.
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How to Blow Out Candles on an iPad

Tap on the Toddler iBirthday app to start the app.
Listen to the app play the Happy Birthday song on a piano.
Put your mouth near the iPad microphone when the song is over. Locate the microphone on the iPad's top-left corner. The microphone is a very small hole to the right of the headphone jack.
Blow hard into the microphone. iBirthday extinguishes the candles and a child's voice says 'Happy Birthday.'
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How to Open Up a Macbook (6 Steps)

Shut down all applications and programs. Turn off your MacBook.
Unplug the device from its electrical source. Disconnect all devices such as your mouse and music player.
Put the MacBook on a clean towel on a table. Flip it over so you are looking at its bottom.
Find the coin slot and turn it clockwise with the edge of a coin. The battery will pop up. Lift it out of the laptop.
Find the eight screws around the border of the MacBook. Unfasten these screws and note exactly where each is on the laptop.
Lift the case off the laptop. View the inside of the MacBook.
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How to Remove the Keyboard in a MacBook (8 Steps)

Put the soft cloth down on a table. Close the lid of the MacBook and place it face down on the soft cloth. Turn the lock on the bottom panel to release the battery. Slide the battery out of the bottom and put it aside.
Use the Phillips jeweler's screwdriver to remove the three screws running across the long part of the 'L' shaped bracket inside of the battery compartment. Lift the 'L' shaped bracket up and out of the battery compartment.
Use the Phillips jeweler's screwdriver to remove the two screws, one on each side, at the end where the battery cable is located inside the battery compartment.
Lift up on the three metal levers in the battery compartment and remove the screws beneath each using the Phillips jeweler's screwdriver. Use the Phillips jeweler's screwdriver to remove the 2nd, 4th, 7th and 9th screws in the front of the battery compartment, counting from the left side.
Use the Phillips jeweler's screwdriver to remove the three screws from the bottom of the case; two at the back edge and one in the middle. Use the Phillips jeweler's screwdriver to remove the two screws on the outside of the case next to the battery compartment.
Use the Phillips jeweler's screwdriver to remove the two screws on the side of the case next to the optical drive. Remove the four screws from the back of the MacBook where the hinge is with the Phillips jeweler's screwdriver.
Turn the MacBook right side up and put it down on the soft cloth. Open the lid. Grab the back corners of the top plate of the MacBook from both sides. Wiggle the top plate loose.
Grab the top plate from both edges at the front. Slowly lift it up until you see the track pad cable's connector on the case. Pull the connector off the case. Remove the top plate and the keyboard from the case of the MacBook.
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How to Repair a Dead Laptop Battery

Shut down the power on your laptop and close the screen.
Locate the battery case on the underside of your laptop. The case will be a narrow rectangle shape, and be about as long as the width of the laptop.
Notice a lock/unlock sliding switch underneath your laptop. Usually there are two of these switches, each with a battery symbol, near each end of the battery case.
Grasp the laptop battery with your fingertips as you slide one of the switches to the unlock position. Now unlock the second sliding switch. The battery case should now come loose, which will allow you to remove it from the laptop.
Put the battery case in a large freezer bag. Make sure the bag is sealed completely and place it in your freezer for 12 hours.
Remove the bag from the freezer after 12 hours have passed. Take your laptop battery out of the freezer bag and allow it to completely return to room temperature. If condensation appears on the battery case, wipe it away with a small towel.
Slide the battery case back into the empty compartment on the bottom of your laptop. Make sure to lock the battery in place by moving both lock/unlock switches to the locked position.
Plug your laptop into a wall outlet, but do not turn it on. Allow the battery to charge for several hours.
Turn your laptop on and check the battery monitoring icon to see if the unit is fully charged. Usually the icon is on the bottom right side of the computer screen. Wait until the icon shows a full charge before proceeding.
Remove the wall outlet power and continue using your laptop, or let it sit with the power on, until the battery runs completely down. Now plug power back into the laptop and fully recharge your battery. Repeat this cycle of charging and discharging four times. After the fourth cycle you should notice your battery holding a charge for a much longer time than before.
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How to Fix Water in My Laptop Screen (7 Steps)

Unplug your laptop and remove the battery.
Unscrew any screws around the frame. Not all laptop frames are screwed on, some simply snap in.
Use your small nylon pry tool to remove the monitor frame. Put the tip of the tool under the outer edge of the frame, work your way gradually around the frame, and gently pry the frame off.
Unscrew and pry off the plastic casings that cover the display hinge where the display meets the keyboard. This will reveal the monitor wiring.
Unscrew and remove any screws or brackets that are holding the laptop screen.
Line your keyboard with a clean, soft cloth. Put on the cotton gloves and pull the LCD screen down and rest it flat, face down on the keyboard.
Use a LCD screen cleaning cloth to blot up the liquid. A LCD screen cleaning spray can also be used if necessary. A blow dryer on a low setting can also be used to evaporate the water. Be careful to not let the laptop get too hot.
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