on both sides of the motherboard.ĥ.6 Also, check the MagSafe power connection board.ĥ.7 Use a brush and isopropyl alcohol to remove all liquid damage/corrosion.ĥ. After removing the motherboard, clean all remaining internal components (DVD drive, touchpad, motherboard, etc.).ĥ.5 Check for liquid damage, corrosion, damp places, etc. Water may short-circuit and damage the circuit.ĥ.1 Remove the bottom cover, disconnect and remove the battery.ĥ.2 If the battery is wet, wipe it clean with a soft cloth.ĥ.3 Remove the hard drive and look at the controller board on the bottom of the drive.ĥ.4 Remove the motherboard.
How to use Apple Hardware Test on your Mac If it fails, or the problem recurs,please follow the steps below. and then when you hear the beep the second time release. Do this by pressing and holding option +command + P + R at the same time at startup (before the beep), keep holding these keys, the screen will turn black again. Perform PRAM reset to eliminate most of the error and make them run again. Due to the operating system environment, such problems may be caused. Prioritize virtual OS, optimization application,etc. Troubleshooting is a waste of time and some service cannot be checked. If there installation MacOS is too troublesome, you can try to check background services/programs, check the programs and services whether it is normal uninstall. The most straightforward solution to this is to reinstall the system.
MacBook some keys stopped working maybe caused by the driver not being loaded or the keyboard setting error. Try to delete the latest application to check if the MacBook keyboard is working. After entering the system, due to some program conflicts, the keys do not respond.ĭoes it happen after installing a new application? It is very common for applications to cause conflicts and cause other error. So, it may be that the keyboard is not broken. MacBook keyboard stops working after login. When you type numbers, the mouse cursor moves very slightly.Therefore, if you try to type a number, the mouse cursor on the screen seems to be shaking in a small area. If the account you logged in has disabled the mouse button, but the MacBook keyboard does not respond, switch the button of the mouse button to "On" and"Off" to restore functions.ĭouble-clicking option 5 times is used to turn on the keyboard to control the mouse pointer, so the mouse button is the most obvious indication that the MacBook air number keys not working. System Preferences - Accessibility - Mouse and Trackpad - Options -"Press the option key five times to toggle Mouse Keys" Most of the keys on the keyboard can respond, but nothing is entered when u, i, o, j,k, l is typed.įrom the replies in the forum, many people have mentioned this problem.
Do I need to replace the entire keyboard or is there something else I can try? What should I do if my MacBook keyboard not working? When turning my MacBook back on I noticed my J key does not work.