Screen brightness

Hello everyone I have a problem with my boot camp w Windows 10. I've set the screen brightness down to 0% and after restarting mac on Windows I cannot log in due to the low brighteness of the monitor (basically i cannot see the mouse icon). unfortunatley my keyblard drivers haven't been insraed correctly so I cannot increase the brightness neither by using the special keys not by using fn + F1/F2 ...

maybe should I change some files manually by osx to increase brightness at start?

IVe a MacBook Pro retina late 2013

THank you,