One time I wanted to tweak my graphics on Windows 3.1. Normal VGA with 640x480 was no problem to configure since it could use some kind of generic drivers. So eventually I choose one of the SVGA modes with 800x600 and after restarting the screen was just dark. Luckily I managed to undo the settings with the keyboard and a blank screen. IIRC the settings for that were quite exposed and it worked. However, countless times where I lost my system setup.

> usually the system would get into some kind of bad state after several months of usage (or at least mine did)

Sometimes some part of the bad state would go okay again for me after some more months of waiting. E.g. the system would only go past the Windows 95 loading screen after opening and closing the CD-ROM drive but at some point that problem would disappear.