: Right-click the file and run a scan with your antivirus (like Windows Defender or Malwarebytes).
: Download VLC Media Player or MPC-HC . These are the "Swiss Army Knives" of video; they can open almost anything without extra configuration. tfpdl-tblklst100372x.mkv
If the screen stays black but you hear sound, the file might be encoded in H.265 (HEVC) . : Right-click the file and run a scan
: If there are multiple language tracks, you can switch them under Audio > Audio Track . tfpdl-tblklst100372x.mkv
