I'm having problems with the Boom-Box Boss fight, I've read the guide, the comments... but the screen turns pitch black, only the stats of the boss, the girl and the MC. No "sparkling" thing, no flashlight... nothing to get a reference for me to move around, just pressing the movement and action keys like mad, hoping to randomly hit the swith.
Any ideas?
TIA
PD: Finished Caroline questline, won the "final battle" against serena, thinking things would be easier or the room would be less dark... but no. Same pitch black screen with status bars on top.
Edit: Finally managed to fix the issue.
Had to raise adapter color gamma value to eventually see something.

The "Spark" marking the switch is not seen in the dark.
It should emit a tiny source of light when active IMO.
