2

It's a 2011 MacBook pro and the a and c keys are not working on both the built-in keyboard and the usb keyboard.

Because of this i can't bypass the firmware login screen. Now the weird thing is that that cmd + a works (select all) so the key is being recognized, but a by itself doesn't.

Any ideas?

dwightk
  • 7,619
  • 14
  • 47
  • 70
DGDD
  • 141

1 Answers1

0

You can start by rebooting into safe mode as a troubleshooting step. Restart and hold down the shift key, when booted into safe mode you can test the keys:

Delete the preference file which can be found here /Library/Preferences/com.apple.keyboardtype.plist

Restart normally

Maximus
  • 5,775
  • Cant boot into safemode because of firmware password. Firmware password appears instantly upon boot – DGDD Apr 02 '14 at 18:05
  • Does your computer have a removable RAM? If so then you can take out one RAM stick and boot the computer by holding down CMD+ALT+P+R and allow the computer to reboot 3 times which should clear the firmware password. – Maximus Apr 03 '14 at 10:14
  • I tried but it turns out that only works on pre 2010 macs. – DGDD Apr 04 '14 at 16:13