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 Force Close Mail on a MacBook (5 Steps)

Click outside of the Mail portion of the screen, somewhere on the desktop, to open Finder. Finder is always running under your other programs, so any problem with Mail won't prevent you from using Finder.
Click on the Apple logo at the top of the screen.
Select 'Force Quit' from the drop-down menu.
Highlight Mail in the pop-up window. If Mail is red and marked 'not responding' you likely have a problem. If the text is black and not otherwise marked, you may want to wait a minute to see if the problem fixes itself.
Click on the 'Force Quit' button to close Mail. You may re-open Mail after the program is forced closed.
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How to Check MacBooks for Hacks

Turn on the MacBook.
Click on 'System Preferences' in the Apple menu. Once the window opens, click on 'Accounts,' then click on 'Login' Items.
Use the '- sign' to remove items that you do not recognize from the list.
Note the applications you were using when the problem first occurred and review any software that was recently installed.
Check your network activity in your Activity Monitor by locating this file in your Applications/Utilities folder. It will display a list of the processes, statistics, applications, and programs that are currently being used by the computer.
Note any consistent action in the Activity Monitor. If you see purposeful activity, then it is likely that an unauthorized user has connected to your computer using remote access.
Click on the 'System Preferences' window in the Apple menu and launch the System Preferences application. Open the Sharing reference window.
If Screen Sharing is enabled for the computer, note users who are currently allowed access to the computer. If you see suspicious activity, disable the Screen Sharing application.
Disconnect from the network, unplug the Internet cable and turn off the computer.
If problems persist, consult a computer technician.
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How to Troubleshoot Mac USB Issues (7 Steps)

Check that the USB device is connected to the appropriate jack. There is a USB jack in the back of most keyboards, but it often only works with a mouse.
Unplug any USB devices and wait a few moments before reconnecting them. You can often fix problems with your USB keyboard and mouse by using this method. Try restarting your computer if the malfunction persists after you reconnect the USB device.
Test your USB peripherals in another computer. If the problem exists in the second computer, you may need to have the device serviced or look for an updated version of the firmware that supports your USB item. Check the manufacturer's website for these updates.
Try different devices in the same USB port. For example, if your mouse if behaving strangely, see whether an external drive or an iPod is able to connect to the computer via that USB port.
Disconnect any USB hubs that you're using and connect each device one at a time to your computer. You need to troubleshoot the devices individually to find out whether the USB hub or the one of the devices is causing the problem. Be sure to test each peripheral with a working USB cable.
Reset the parameter random access memory (PRAM) and nonvolatile RAM (NVRAM) on your computer. Turn off your computer, then restart it and immediately press and hold the 'Command,' 'Option,' 'P' and 'R' keys on the keyboard. Release the keys after you hear the startup chime for the third time and your computer should boot normally.
Consider reinstalling the operating system after clearing your computer's hard drive. Be sure to back up all of your data before you erase the disc. You may also want to bring the computer to a Mac service center and have the logic board examined.
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