Hi Aluminiumfoil, thanks for your question. I'm Graeme, a Microsoft Community expert and fellow user.
I understand your dilemma. Let's see if you can get to the screen brightness settings in Windows while blind!
- First, log in and let Windows load completely.
- Press Windows key, then type Brightness.
- Press Enter
- Hold down the right arrow, which should move the brightness slider upwards to the right.
Do this with a small pause of a few seconds in between each step to make sure each part loads completely before modifying settings.
Please let me know how you go! Thanks!