Windows 10: I Open Start > Settings > Personalization > Background, then choose Picture, Click Browse,...

Using Windows 11. The photos app shows the pics without issue.

:)

 

Start up screen picture

Open Start > Settings > Personalizations > Lock Screen

Click in the Background list box

Choose Picture

Choose Browse

Browse your hard disk then choose another picture.

 

ADD PICTURE TO START?

If you want to change your profile picture, open the Start button at the bottom left corner > Settings > Accounts > Your info > Browse for one

Browse your hard disk then choose a profile picture.

If you are referring to the Lock Screen.

Open Start > Settings > Personalization > Lock Screen

Click in the Background list box

Click Picture

Click Browse below 'Choose your picure'

Browse your hard disk then choose a picture.

 

Opening screen picture

Hi Sharon,

You can customize the settings of the lock screen and desktop screen background picture in the Pesonalization page of Settings. You can also change the profile picture that you're seeing on the log-in screen in the Accounts page of Settings. Just to clarify,
are you referring to the desktop screen, the lock screen, or the profile picture of your user account?

To change the background picture of the lock screen, follow the steps below:

• Click the Windows logo (Start button).
• Click the gear icon (Settings).
• Select Personalization.
• On the left pane, choose Lock screen.
• Under Choose your picture, you can select from the default list of photos or you can click on
  Browse if you want to select the photo that you want.

You can change the background picture of the desktop by following the same steps above but instead of choosing lock screen, select
Background.

You can replace the profile picture of your user account by doing these steps:

• Click the Windows logo (Start button).
• Click the gear icon (Settings).
• Select Accounts.
• On the left pane, choose Your info.
• Under Create your picture, choose Browse for one to see choose the profile photo that you want.

If you have additional questions, kindly reply to this thread.