A graphics card helps with playback and rendering, but many browser video issues are actually network or playlist problems rather than GPU problems. When troubleshooting an HLS stream, I first check whether the .m3u8 playlist loads, whether segment requests return 200, and whether the user has permission to save the media. A browser tool such as HLS Downloader can help inspect authorized HLS media, while GPU drivers matter mainly for playback or transcoding performance.