Why my partially black screen when using win7?

Hello everyone. I'm having this problem with my screen. When I start using my computer, the screen is very clear, but in a short time later, it darkens partially. I can still see what is happening, but the darkness makes it harder to see things. Can someone tell me why this is happening and how to fix. Thank you for any offer of assistance.


You can try to disable hardware acceleration in Firefox.

  • Tools > Options > advanced > General > Browsing: "use hardware acceleration when available.

You will need to close and restart Firefox after enabling/disabling this setting.

You can check if there is an update for your display driver graphic card and search for hardware acceleration of related issues.

Tags: Firefox

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