I did both resets and after the SMC one the display is much brighter but still cannot be altered via keys or system preferences.That is showing that your Mac is using an external display, not the built in.
Have you tried to reset the PRAM and SMC on your MacBook Pro.
To reset the PRAM:
- Shut down the computer.
- Start your computer while holding down the following 4 key. Command Option P and R keys.
- Wait till the 3rd chime and then release all the keys.
To reset the SMC:
- Shut down the computer.
- Plug in the MagSafe power adapter to a power source and to your computer.
- On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time and hold for 5 seconds
- Release all the keys and the power button at the same time.
- Press the power button to turn on the computer.
- On MagSafe power adapters, the LED might change states or temporarily turn off when you reset the SMC.
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