How to Change the Battery on an Apple Laptop (5 Steps)

Shut down your computer. Wait 10 minutes for the computer to cool before opening the battery door as it may be too hot to touch.
Turn your computer over so the bottom is facing up. Release the latch on the battery door. The latch is located on the right-hand side of the battery door. If you have a first-generation Macbook (made in 2007), turn the lock symbol from locked to unlocked.
Open the battery door. Remove the battery from its case by pulling up.
Unwrap the new battery. Place the new battery in at an angle, sliding it below the brackets. Press the battery down to secure it.
Close the battery door. Slide the latch shut or turn the lock to secure the battery door.
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How to Back Up an iPad (5 Steps)

Open iTunes on your computer. iTunes manages and stores iPad backups.
Connect the iPad to the computer with the iPad connector cable.
Turn on the iPad. The iPad should appear in the 'Devices' section in the left panel of iTunes. You can set iTunes to automatically back up your iPad every time it syncs with iTunes.
Right-click the iPad in 'Devices.'
Select 'Backup' from the context menu to back up your iPad. iTunes will automatically create a backup of your iPad settings within iTunes.
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How to Play From iPad Pandora to Apple TV (6 Steps)

Connect one end of an HDMI cable to the port on the back of the Apple TV, then connect the other end to the back of your television.
Plug the power cord into the back of the Apple TV, then into an available power outlet. Turn on your television and follow the manufacturer's directions to set up the correct input for Apple TV.
Press the 'Sleep/Wake' button on the iPad to go to the home screen.
Tap the 'AirPlay' icon on the home screen. Tap 'Apple TV' to select it. A checkmark will appear next to 'Apple TV.'
Tap the 'Pandora' app icon to open Pandora. Tap on the 'Home' icon to bring up recent apps. Scroll to the far left to see the 'AirPlay' icon.
Tap 'Play' on Pandora. It will play through Apple TV.
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How to Use a Wireless Projector With an iPad (4 Steps)

Insert the VGA adapter into the iPad's dock connector port, located at the bottom of the iPad.
Insert the other end of the adapter into your wireless projector's VGA port.
Turn on your projector, and push the 'Home' button on the iPad.
Tap the 'Keynote' or 'Videos' icon on the iPad's home screen to display the presentation or video.
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How to Output iRig to Amp (9 Steps)

Connect the other end of this cable to the 1/4-inch jack on the bottom of the supplied hardware adapter. There are two jacks on the adapter, the 1/4-inch jack is the largest.
Connect the audio connector end of the adapter to the audio port on your iPhone or iPad.
Connect a the 3.5mm end of a 3.5mm-to-6.5mm cable to the 3.5mm output socket on the top of the hardware adapter.
Connect the 6.5mm end to the input on your guitar amp. A 6.5mm connector is also referred to as an 'instrument jack' or '1/4-inch jack.'
Turn the 'Master Volume' dial on your guitar to zero. It's always smart to turn the volume to zero before turning on your amp. This is especially true if you are introducing a new piece of equipment to your rig.
Turn the amplifier on. If using a tube amplifier, put it in standby mode for two minutes before putting the power fully on. This lets the tubes warm up.
Turn off any on-board effects, such as reverb, distortion or overdrive. Because the iRig app features an array of effects, it's preferable to set your amp to as clean a sound as possible so the overall tone isn't muddied by having too many effects.
Launch the iRig app on your iPhone or iPad. Select a sound option from the visual interface by tapping the screen.
Increase the amplifier volume to your preferred level.
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How to Remove an iPhone Certificate

Turn on your iPhone and click on the 'Settings' icon in the main menu screen. Select 'General' from the list of options that appear in the drop-down menu.
Select 'Profiles' from the list of options that appear and a list of all the certificate on your iPhone will appear on screen.
Scroll through the list of certificates until you come to the one you would like to remove from your iPhone and click the 'Remove' button on the screen. The certificate will then be removed. Repeat the process for any other certificates you would like to remove.
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