I had to down grade from Catlina and I have successfully reinstalled mojave and I was able to use backup of data I previously created. I can’t log in now at all, because the keys that are not working are in my password. And one of them is also in my Apple ID so I cannot log in via this route either. Please help. I even bought a new keyboard but the exact problem still exists.
If you have the same problem with a new keyboard then the issue is software.
Try an NVRAM reset:
Reset NVRAM or PRAM on your Mac - Apple Support
And an SMC reset:
How to reset the System Management Controller (SMC) on your Mac - Apple Support
If you have the same problem with a new keyboard then the issue is software.
Try an NVRAM reset:
Reset NVRAM or PRAM on your Mac - Apple Support
And an SMC reset:
How to reset the System Management Controller (SMC) on your Mac - Apple Support
Please tell us exactly which keys do not work. If 789uiojkl, then you need to turn off Mouse Keys.
After reinstalling Mojave os from Caitlina down grade, some keys on keyboard are not working
