Windows 10: Screen dim during boot up

Hey guys, on my laptop Im set to high performance, disabled power saving in my graphic properties, the issue is this
When I boot my laptop Plugged in to charger, first screen is dell and second screen is the windows logo with dots and third screen is the dots and my screen dims and goes back to full brightness during this screen

Without the charger plugged in it stays full brightness the whole way, no dim during the screen after the windows logo screen.

Set to High performance
Have screen lockout set to 0 minutes
bios has full brightness for both plugged and unplugged

:)

 

How to dim screen?

I tried googling Windows Ten, "how to dim screen," but the layout listed is not the layout I have. I just got Ten yesterday. How do you dim the screen?

I can't even find the options in the Display section.

 

Dim screen Win 10?

Have read the blogs. Windows 10 needs to make it EASY for people to dim their screen. This is my 3rd Toshiba laptop and it was easy to adjust the screen on all 3 including this one, until windows 10. Will buy a new laptop without Win 10 before I'll go
through all the steps to dim screen in win 10 that is listed in the blogs I've read. I did stall an APP that helped but screen still hurts my eyes and creates a headache. Anybody have an EASY answer. It was so easy to work with DOS and windows 3.1. It's been
a pain for a lot of people ever since they came up with the REGISTRY. Thanks people.

 

Weird screen dimming issue.


For the last few weeks I've had this bizarre issue where my screen will randomly dim. I can't click on anything when this happens.. The only way to fix it, is to either restart my computer or re-log.

Any suggestions?