1, let's see if we can use it before entering the system. For example, press F 12 F8 F2 when booting. If it is normal, it is a system problem.

2. Press the No button in my computer, and then select the device manager ergonomic input device apple keyboard from the hardware options inside to try again.

3, it may also be a driver problem, Baidu "Apple version of the driver wizard", install a driver wizard or drive life, all drivers automatically search! Just click Install!