Inverted colors and cannot revert to normal display

I'm embarrassed to say I hit an unknown set of keys -- I think they might have been: ctl-shift-tilde-scrolllock-9 -- for no good reason and my display went negative and is now stuck there. I've been able to revert my desktop using the Invert function on Magnifier but all my Firefox, Explorer or Chrome browser windows, folders and apps, along with my taskbar, display in negative and many parts are impossible to read.

I don't have many adjustment options. For example, when I go to Color Options for the taskbar, the controls do not respond. If I go to Options in my word processor, Apache Open Office, I'm able to revert the color scheme to some extent in the document but the tool/menu bars remain in negative. Various "Invert Browser" add-ons from Firefox don't do anything.

In trying to figure this out, it seemed like I might be able to use more options if I turned off High Contrast in the Display Preferences controls, but doing so made everything unreadable and I couldn't see how to go further.

Here's a screenshot of how this forum looks to me on Firefox. Any help is greatly appreciated, thank you!

Thank you, I'll try that. I've read the information at the link you sent and am not clear on the statement:

"It is best to exclude the DDU folder completely from any security software to avoid issues."

Can you explain how this exclusion is done? Thank you.

Okay, thanks!

coeurl said:

...I've been able to revert my desktop using the Invert function on Magnifier but...
...I don't have many adjustment options. For example, when I go to Color Options for the taskbar, the controls do not respond...

Hi,

It seems like some "Ease of Access" options have been activated. You may try to:
Open Settings (Win key + i). Go to Ease of Access and Turn OFF Magnifier, Color filters and High contrast:


Then, return to Settings, go to Personalization => Colors, on "Choose your color" select Custom, right below choose Dark for Windows mode and Light for app mode:

Thanks! Will try that first.

Close all applications, Left Alt+Left Shift+PrintScreen, restart Explorer.

I want to express my gratitude to everyone for their input. In looking through my options -- and learning much about my OS of which I was previously unaware -- I found a recent restore point and running a system recovery to it has fixed the problem. I'm relieved that nothing more radical was needed and am very appreciative of all your expertise. Thanks again!

You're very welcome!