darktable export color problem - Help!

ok, I didn’t explain myself well. What I encounter is that the colours are not saturated. everytime I turn on/off a module the histogram may change or not (completly random) and the colors I get are not saturated.

I have done on a different ocasion other photo edits and when I load them with the previous modules and export, they don’t look like the previous exported.

I believe this has to do with something in windows 10 update (?) because I have done a system restore and it got back to normal, but then I got a new update.