Black screen when recording.

[Aggelos]

I was recording yesterday, Wednesday 20th, and it was fine. Today same website but black screen...ish. It records everything around what I am trying to record, but not what I'm trying to record. Another website records fine.
The browser I use is firefox. It auto-updated this morning. Doubt that a coincidence.
I use a laptop, windows 10, but I only record when the power cord is connected and switched on.
Last time this happened, I downloaded a more recent copy of OBS. Didn't help this time.
I found this thread, https://obsproject.com/forum/threads/laptop-black-screen-when-capturing-read-here-first.5965/
It didn't help but made matters worse.

 

[Brunox63]

have similar issue .. I could record fine, but since a day or 3, it keep recording black screen in full screen mode. Sound is recorded. When toggling video to normal mode, it records the video too. I'm using firefox, but tried with opera .. and it is the same issue. Tried also older recommendations found (set graphic mode in windows; nvidia settings obs; reinstall obs ), but nothing seem to help.