realtekhighdefinitionaudio64bitwin7win8win81win10r279exe refers to the Realtek High Definition Audio Driver (version R2.79)
Outdated or corrupted audio drivers can lead to a range of issues, including: realtekhighdefinitionaudio64bitwin7win8win81win10r279exe
A Comprehensive Guide to Realtek High Definition Audio Driver for Windows 7, 8, 8.1, and 10 realtekhighdefinitionaudio64bitwin7win8win81win10r279exe