Unable to log into new installation of macOS High Sierra I recently installed macOS High Sierra on my MacBook Air. After that, it is not accepting the correct password. I also failed to unlock my FileVault. It also shows that the password I entered is wrong.

Later, I discovered that when I type it input some symbols instead of letters, I tried to change it using Input sources on the right most corner of the screen but again it’s not working.

I spend long hours for it, but all in vain. I decided to re-install macOS, and now the problem is I cannot boot from the USB. I tried all possible combinations to enter Disk Utilities, but in vain.

What should I do?
Before you worry about the installer, have you tested the hardware port?


Do you have an external keyboard that you could use to see if that works?