How to Plug a MacBook Into a TV and Get a Picture

Figure out which plug you want to connect your MacBook to your TV. With an S-Video, DVI, HDMI or VGA cable you will get video, but you will need an RCA adapter and cable in order to get sound. Purchase the proper converter and cables for your MacBook and TV. You will need a mini DVI adapter in all cases.
Plug the mini DVI adapter into your MacBook.
Plug the S-Video, VGA, DVI or HDMI cable into the mini DVI adapter's output.
Plug the S-Video, VGA, DVI or HDMI cable into your TV.
Turn on your TV. Select the proper channel for the port you have plugged into your MacBook.
Turn on your MacBook and go to 'Display' in 'System Preferences.'
Click on 'Mirror' to mirror on the TV what is being displayed on your MacBook.
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How to Connect a Macbook Pro to a MIDI Controller Keyboard Play Through an Amp

Plug one end of the MIDI cable into the 'MIDI Out' port on the MIDI controller keyboard. Plug the other end of the MIDI cable into the 'MIDI In' port on the audio interface.
Plug one end of the TRS cable into one of the 'Left Output' TRS jack on the audio interface, and plug the other end of the TRS cable into the 'Left Input' on the keyboard amp. Use the other TRS cable to connect the 'Right Output' on the audio interface to the 'Right Input' jack on the keyboard amp.
Turn on the Macbook Pro and click the Apple menu, then 'Preferences,' then 'Sound.' Click the 'Input' tab and select your USB or Firewire audio interface from the drop-down menu.
Click the software synthesizer's desktop icon to launch it. Alternatively, click 'Go,' then 'Applications,' and select your software synthesizer from the applications list.
Click 'MIDI Channel' in the software synthesizer and set it to '1.' Some applications allow you to open multiple software synthesizer tracks, in which case you should assign the MIDI channel on the 2nd track to '2,' and assign the MIDI channel on the 3rd track to '3.' MIDI allows up to 16 assigned channels at once.
Press 'MIDI Channel' on your keyboard and set it to '1.' If you have assigned multiple MIDI tracks to different channels, then the keyboard can switch between MIDI tracks by switching channels. This means you don't have to interrupt a performance to change MIDI tracks.
Click 'Options' or 'Preferences,' then 'Output' in the software synthesizer, and select your USB or Firewire audio interface as the output device if it is not already selected.
Turn the volume all the way down on the keyboard amp, then turn the keyboard amp on. Press a key on the keyboard, turn the volume up gradually, and listen for a sound.
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How to Turn on the Microphone on a MacBook

Click the 'Apple' logo from the Finder menu.
Click 'System Preferences.'
Click 'Sound.'
Click the 'Internal Microphone' option under 'Select a Device for Sound Input.' The MacBook's microphone is now set to turn on whenever you launch an application that uses sound, such as GarageBand or iChat. The built-in microphone is located above the 'Esc' key on the MacBook's keyboard.
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How to Fix a Laptop That Makes a Clicking Noise

Insert a CD or DVD into the optical disk drive to determine if the drive is making the clicking noise. Power the computer off and on to determine if the noise persists while the computer is turned off, or if the noise only occurs while the computer powers up or runs.
Remove any CD or DVD from the disk drive. If the computer makes a clicking sound only when reading from the disk drive, the disk itself may be the problem or the drive may be bad. Insert a different DVD or CD in the drive. If the noise continues, replace the drive or take the computer to a repair shop.
Remove the laptop from any uneven surface. If the surface is not level, the hard drive may not function properly and produce a clicking noise. Place the computer on a level surface and restart it to check that the clicking noise is gone.
Back up any important information from your hard drive onto a CD or external hard drive. If the clicking sound is coming from your hard drive, the drive may be going bad. Back up your important information while the drive is still working. Take the computer to a professional computer repair store to determine if you need to replace your hard drive.
Replace the hard drive if the drive makes a clicking sound because it no longer functions properly. Take the computer to a repair shop or send it to the manufacturer to replace the hard drive. If you have the expertise, you can purchase a new hard drive and replace it yourself. Consult your laptop owner's manual before attempting any repairs.
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How to Bypass an iMac Password (4 Steps)

Press the Power button on the iMac for a second to power it up.
Press down on the “Shift” key immediately after hearing the Mac’s start-up sound.
Release the “Shift” key once the gray Apple logo appears and a spinning “gear” animation is displayed on the screen.
Wait for the desktop to appear on the screen. The iMac’s password has been bypassed and the features of the Mac’s OS X operating system can now be used, although most features will be disabled until the iMac is rebooted normally.
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How to Disable the Microphone on a MacBook

Click on the Apple icon in the upper left corner of your computer screen.
Click on 'System Preferences'.
Click on 'Sound', which appears in the 'Hardware' category.
Click the 'Input' option at the top of the window.
Click 'Line In'.
Close the 'System Preferences' window by clicking the red button in the upper left corner.
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How to Use Bluetooth to Connect a LCD Projector

Turn the LCD projector on and connect the USB Bluetooth dongle or accessory, if applicable.
Launch the Bluetooth setup assistant on the computer. On Windows computers, select 'Bluetooth Devices' under the 'Hardware and Sound' option in the Control Panel; on Macs, select 'Bluetooth' under System Preferences in the dock or under the Apple logo (top menu bar).
Select the 'Add' option (Windows) or 'Set up Bluetooth device' (Mac) to launch a setup assistant.
Uncap the lens cap on the projector and click the Bluetooth button on the LCD projector to make the device discoverable.
Click the 'Next' or 'Continue' button on the Bluetooth setup assistant.
Select the type of device supported by the computer or select 'Other device' if the projector isn't listed.
Insert the CD containing the hardware drivers when prompted and select the file to install the driver.
Click the projector from the list of discoverable Bluetooth devices.
Type the passkey or code for the projector (according to the manual) and press the 'Enter' key.
Click the 'OK' or 'Close' button when the computer confirms the units are connected.
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How to Solve Mic Problems on a Mac (5 Steps)

Restart your computer. Click the Apple menu icon at the top of the desktop and then click 'Restart' from the pull-down menu. Click 'Restart' in the dialog box to confirm the computer's reboot. A computer restart forces all open applications to shut down, which releases an application's use of the microphone.
Check your computer's volume settings once the computer has restarted. Click the Apple menu icon and click 'System Preferences' to access your computer's system manager. Click 'Sound' and make sure 'Internal microphone' is displayed in the device section. Drag the slider on the microphone tab to the right to increase the microphone input volume. Make sure the checkbox next to the mute option is unchecked.
Remove all external audio attachments and close all open applications. Hold and press 'Command' and 'Q' on your keyboard to exit each application. If the application is unresponsive when attempting to quit, click the Apple menu icon, click 'Force Quit' and then click the name of the application in the window. Click 'Force Quit' to confirm the action and then restart the application to test the microphone.
Update your sound drivers. Click 'Software Update' from the Apple menu on your desktop and then click the checkbox next to any operating system or driver updates. Click 'Install Item' and enter your administrator password. Click 'OK' to install the update and restart the computer.
Re-assign your microphone settings. Click 'System Preferences' from the Apple menu on the desktop and then click 'Sound.' Click the 'Input' tab in the 'Sound' window and then insert an external microphone's adapter into the headphones port on your Macintosh computer. Click 'Line In' in the sound input window to select the connected microphone as the new default device.
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