Changed enhancements yesterday on video. Now today, weird!

[CrewXp]

Yesterday I was playing a video that was kind of dark. So I changed the brightness in Windows Media Player and moved it up a little a long with some saturation and contrast changes. It looked fine for that video. And the others that were normal still looked fine in that setting, just a little brighter. I shutdown my pc, forgot I changed it, and when I tried playing a video today, the picture is all messed up. I tried changing it back, resetting it, but it said it was already at normal. I couldn't reset because everything was balanced. I wish I could post a screenshot, but everything turns out black in the movie on the screenshot. It could also not be the settings I changed. Yesterday I also upgraded my nvidia graphics driver. I forgot if I reset afterwards or not. Is there anything I can do to fix it?

[Baldrick]

nvidia problems, read
https://www.videohelp.com/forum/viewtopic.php?p=1337363#1337363