Power setting turns display off as set but then it turns right back on

Do you have allow wake timers set to disabled ?

But you never put the PC to sleep, so it won`t be that.

Do you turn the PC off when you`re not using it ?

Boot into safe mode as Try3 has suggested.

I would also disconnect your track ball and plug in a normal usb mouse and see if it still comes right back on, if you haven`t tried that yet.

Verna,

I think your first checks should be
- Does this happen in other user accounts? [create a local one for test purposes if you do not already have one]
- Does it happen in Safe mode? Boot into Safe Mode - TenForumsTutorials

If the first answer is No then your current user account has been corrupted.
If the answers are Yes & No then go to Dell Drivers & downloads, use your Dell Service tag and download another copy of the display driver then reinstall it even if it is the same version as the one you already have.
If the answers are Yes & Yes then I think you should disconnect both the trackball & the keyboard to see if one of them is the cause.

Denis

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Verna said:

... I don't have all the settings ...

Verna,

See
Add or Remove Dimmed display brightness from Power Options - TenForumsTutorials
and look at the list at the end of it for other
Add or Remove ... from Power Options - TenForumsTutorials
ones.

Denis

I use the Control Panel to get to Power Options, not Settings.

Verna,

"I don't have options for Wireless Adapter Settings, USB settings, etc"

I've told you how to add them - see post 6. There's a whole string of tutorials - one for each addable entry.

Denis