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Welcome to the TenForums @Rizrise
Any chance you installed on changed the Windows 10 theme?
Did you install any other software recently to "Enhance" windows?
For Powerpoint, in the screen shot you provided, right at bottom is "Bullets and numbering. Click on that. In lower left corner should be a "Reset" button.
Long shot. May be it is not enable as it doesn't think it has changed.
Could you try changing and clicking ok. Then re-enter and try reset.
If you have restore points enable to could restore to an earlier time. You may also want to check out Macrium Reflect to provide Images of system. It's free, reliable and saves you real time by simple going back to a working system.