【How to Fix】Mouse Pointer Turns into a Black Square Box, Like a ■  

I have an issue that my mouse pointer turns into a black square box, like a ■ . Why?

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How to Fix the Issue

The solution is: just change your mouse pointer size, and then back to the original size. However, it's only a temporary measure. It does not remove the root cause. I show step by step guide below.

Step1: Open Settings on windows 10.

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Step2: Click on Devices

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Step3: Click on Mouse. Then, click on Adjust mouse & cursor size.

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Step4: Change your mouse pointer size, and then back to the original size

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I don’t know why this issue happen, but in my case, the black square usually appears in the evening. I hope this bug will be fixed soon!