The screen patches can be caused either due to faulty graphics card or screen damage. But there is no surefire way of finding specific cause without proper analysis of system. Here are some ways to fix screen patches.
Windows update will generally fix problem if patches were caused due to corrupt installation or any bug in previous update itself
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- Update Windows
- Update graphics driver for both display and dedicated cards if applicable
- Fix color settings
UPDATE WINDOWS
Windows update will generally fix problem if patches were caused due to corrupt installation or any bug in previous update itself
UPDATE GRAPHICS DRIVERMain reason for screen patches is graphics driver so check if updating the graphics driver solves your problem or not. Be sure to update both display and dedicated driver if applicable
FIX COLOR SETTINGSGo to graphics control panel of your display driver and find color settings options. From there adjust brightness and contrast and check either sample in right or portion of screen with patch problem till it goes away. At optimum setting save it
IF YOU KNOW OF ANY OTHER WAYS PLEASE DO SHARE