when i play any audio or video file my pc start loading. at task bar pc process become 100%. when i closed system file pc stop loading and then it start playing but after effect happen to explorer all icons and desktop taskbar become old windows 2000. dont what to do PLEASE HELP. i think it happen after updates.
Try asking again.
Sounds like a malware. Use this Malwarebytes Antimalware or Security Task Manager What player do you use?