How to Fix a MacBook Spacebar (9 Steps)

Take the 'C', 'M' and 'Command' keys off the keyboard. Place your fingernail under the key and carefully lift it up until it unclips itself. Removing these keys will give you more space to remove the space bar and clean.
Press the lower half of the space bar firmly. The upper half will be higher than the other keys on the keyboard.
Press the upper side of the space bar firmly. The lower half will then be higher than the other keys. The change in height will cause the metal bars to unhook themselves from the space bar, and coincidentally unclip the two metal tabs. You may need to do this more than once to get each piece unclipped; you will hear a distinctive click.
Press the left side of the space bar until you hear a click. This means the left white clip is undone.
Press the right side of the space bar until you hear a click. Then press the center of the space bar until you hear a click. At this point, all the clips and hooks will be undone.
Pull the space bar away from the keyboard carefully.
Use a cotton swab or cleaning wipe to clean the now-exposed area of the keyboard. Wipe the space bar key clean as well, since sticky substances and crumbs can get stuck to it.
Place the space bar back on the keyboard in the correct location and click it in place.
Replace the 'C', 'M' and 'Command' keys.
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How to Unlink an Apple Remote Control from a Mac Computer

Click the Apple menu on the top left corner of the Mac OS X screen.
Click 'System Preferences'.
Select 'Security'.
Click the 'Unpair' button in the 'General' tab.
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How to Get a MacBook to Display the Full Screen

Click the Apple logo in the upper-left corner.
Click 'System Preferences.'
Click 'Displays.'
Click the resolution that represents the full screen resolution of the MacBook display, which is at the bottom of the list. The most common setting is 1280x800. Refer to the owner's manual for any details specific to your particular model.
Close the System Preferences utility.
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How to Capture Images on a MacBook Pro (9 Steps)

Click the 'Finder' icon in the dock.
Click the 'Go' menu at the top of the screen, then click 'Utilities.'
Double-click 'Grab.'
Click the 'Capture' menu.
Click 'Selection,' as an option, then click and drag the mouse over the screen to capture the desired image area. This is useful for capturing the image of a desired area of the screen only, instead of the entire screen.
Click 'Window,' as an option, then click 'Choose Window,' then click the opened window to capture the image of just the opened window and not the entire screen.
Click 'Screen,' as an option, then click outside of the 'Screen Grab' window to capture the image of the entire screen.
Click 'Timed Screen,' as an option, then click 'Start Timer.' The image of the entire screen is captured 10 seconds after pressing 'Start Timer.'
Click 'File,' then 'Save' to save the captured image as a TIFF image file.
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How to Set iSight to Take a Picture When the Computer Wakes

Click the Apple menu button and select 'App Store.' Use the search box to find 'Who's Looking,' click the app price and then 'Buy App.' Enter your App Store password to complete the transaction and install Who's Looking.
Click the 'Who's Looking' icon in the dock to launch the application. If you remove the dock icon, you can always launch the application from the 'Applications' folder in Finder.
Click the 'Who's Looking' menu and then select 'Preferences.'
Click the checkbox beside 'Take Pictures On Wakeup' and then click 'Done.' You can also configure Who's Looking to take pictures continuously at an interval you specify. To review pictures, just launch Who's Looking and then click 'Wakeup.'
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How to Shut Off the Camera on a Macbook

Click on the QuickTime icon in the Dock of your Macbook to launch the video application.
Click 'File' from the QuickTime menu, then click 'New Movie Recording.' The iSight camera's light glows, indicating that it is on.
Click the red button to record a video.
Click the black button to stop recording the video. The iSight camera's light turns off, indicating that the camera is shut off.
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How to Ping Your Network From an iPhone (8 Steps)

Make sure that your iPhone is connected to the network you want to scan via WiFi.
Go to the App Store on your iPhone and download the 'Network Ping Lite' application. It is a free app as of this writing.
Open the application and you will see four choices: Ping, Ping Subnet Traceroute, and Telnet. For this article we'll focus on the functions related to pinging.
Choose 'Ping' to ping a specific device.
Enter the DNS name (google.com) or IP address of the specific device you would like to ping and hit 'Start.' Your iPhone will now send out four ICMP packets and will tell you the outcome in the 'Output' section.
Note: You can do a continuous ping by flipping the 'Ping Forever' switch at the bottom.
Choose the 'Ping Subnet' icon to ping an entire subnet.
By default, the app should pick up the subnet that your iPhone is already on. You can change it to check a different subnet or range of IP addresses. (Note: It can only check Class C network subnets.) You can adjust the 'Ping Delay' which is the amount of time that the app will wait for a reply from the device before it declares it failed.
Hit 'Start' and the scan will begin. You'll see a table of all the possible Class C IP addresses for that subnet and the app will change the color of each as it scans to let you know which ones replied. Black = no reply. Green = Received reply. Yellow = last request failed. Red = stopped giving answer. The scan will take several minutes to complete, so be patient.
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