Windows 10: My screen keeps going dark after only a few seconds. How do I make that time longer?

My screen keeps going dark after only a few seconds. How do I make that time longer ?

:)

 

My monitor keeps going dark for about a second

My monitor has been turning going dark for a second or two and it happens multiple times a day, sometimes I'll happen multiple times with only a few minutes in between, and some times it'll be hours in between. It never lasts for much longer than a second
or two, and it doesn't happen from being bumped or anything. Any suggestions would be appreciated.

 

When I switch tabs from a dark colored screen to a brighter screen the screen takes a few seconds to brighten...

So I have a weird screen issue where the screen brightness keeps adjusting based on how bright or dark the screen is...so when I switch from a dark screen to a brighter screen the screen seems to have dimmed and takes a few seconds to brighten to the correct
brightness setting. Does anyone know how to fix this? Adaptive brightness is turned off.

 

Screen times out aftera few seconds over and over


I keep being interrupted by a timeout where the screen goes black after few seconds and keeps doing so even after I set the timeout to 5 or 15 minutes or longer. It always comes back on when I move the cursor a few times. Eventually the timeout delay gets longer than a few seconds but not until much later in my computer sessions. This interferes with my work so I hope someone can help.
*Sad*Sleepy