YouTube flashing black is commonly caused by issues related to hardware acceleration, graphics card drivers, browser settings, or network problems. Many users experience screen flickering or flashing when hardware acceleration is enabled in their browser. Disabling "Use hardware acceleration when available" in browser settings often resolves the issue. Additionally, updating or rolling back your graphics card drivers can help, as driver compatibility issues sometimes cause these flickers. Browser extensions can also interfere, so disabling them one by one may identify the culprit. Ensuring your browser and system are fully updated and checking for a stable internet connection are also important steps. In summary, the key actions to fix the YouTube flashing black screen issue are:

• Disable hardware acceleration in your browser.
• Update or reinstall your graphics card drivers.
• Disable browser extensions selectively.
• Keep your browser and system updated.
• Check your internet connection stability.

These steps typically address the problem by resolving conflicts between the browser’s video rendering and your system’s graphics hardware.