https://wccftech.com/how-to-fix-windows-7-black-wallpaper-bug/

Last week we reported how the final patches delivered to Windows 7 PCs turned the wallpapers black for some users. The issue occurred on devices that had wallpapers set to stretch. This "bug" pushed many to question if it was a low-key way to bug Windows 7 users out of the operating system to Windows 10. Microsoft officially stopped supporting the OS on 14th this month.

The Windows maker has now acknowledged the issue. The wallpaper issue affects all editions of Windows 7 and Windows Server 2008. When the company initially acknowledged this bug late Friday, it said that "a solution will be available in mid-February for organizations who have purchased Windows 7 Extended Security Updates (ESU)."