Apple MacBook Air 11 Inch Early 2014 Quick Start Guide

To reset the System Management Controller (SMC) on your MacBook Air 11 Inch Early 2014, ensure the laptop is shut down. Plug in the MagSafe adapter if not already connected. Press and hold the Shift, Control, Option keys on the left side of the built-in keyboard, along with the power button, for 10 seconds. Release all keys and the power button, then press the power button again to turn on your MacBook Air.
Check the power adapter and cable for any damage. Ensure the power outlet is working by testing with another device. If the issue persists, reset the SMC. If the problem continues, consider visiting an Apple Store or authorized service provider for further diagnosis.
Back up all important data. Restart your MacBook Air and hold down Command (⌘) + R immediately to boot into Recovery Mode. Select Disk Utility, choose your startup disk, and click Erase. Quit Disk Utility, then select Reinstall macOS and follow the on-screen instructions to complete the installation.
Reduce screen brightness and turn off keyboard backlighting when not needed. Close unused applications and browser tabs. Use Activity Monitor to identify and quit energy-intensive processes. Consider updating macOS to the latest version to benefit from improved power management.
Check Activity Monitor for high CPU usage and quit unnecessary applications. Ensure at least 10% of the storage is free. Consider adding more RAM if possible. Restart your MacBook and install any available software updates to improve performance.
Use a Thunderbolt or Mini DisplayPort to VGA/HDMI adapter to connect your MacBook Air to the external display. Once connected, go to System Preferences > Displays to adjust the resolution and arrangement settings according to your preference.
Ensure the MacBook is charged. Perform an SMC reset. Attempt to start in Safe Mode by holding the Shift key immediately after turning on. If it starts, check for login items or applications causing the issue. If it still doesn’t start, consider contacting Apple Support.
Visit the Apple Check Coverage page and enter your MacBook Air's serial number, which can be found on the underside of the laptop or by selecting 'About This Mac' from the Apple menu. This will provide information regarding your warranty status and AppleCare coverage.
Keep the software updated to the latest version. Regularly back up your data using Time Machine. Clean the keyboard and screen with a microfiber cloth. Keep the vents clear of dust and debris to ensure proper cooling.
Use the Storage Management tool available in macOS to identify large files, applications, and other data that can be removed. Transfer files to external storage or cloud services. Empty the trash and clear browser caches to reclaim space.