Hi @Teresa Luse
I suggest you open PowerPoint and click File > Options > Advanced > Display, tick box of "Disable slide show hardware graphics acceleration" option > click OK.
If it does not work, please try followings:
- Press Win + P, try different modes for a check, such as, "Duplicate" and "Second Screen only", then switch back to "Extend".
- Check the display scale and display resolution via going to Windows Settings > System > Display, try different settings for scale and display resolution, such as 100% and 1920*1080.
- Continue to click "Graphics" settings, under "Choose an app to set preference," select the PowerPoint, then click "Options", select other options, such as: "Power Saving" to use the integrated GPU.
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