To Jimco:
Dear Jimco, I went to computer C: and click open > then click open on drives. > then open every single file to check on every single them and found 8 of them that all 8 files share one thing in common. They are running on Vista 64. The factory installed operating system is Windows 8. The only compatibilities available on the 8 files are: Vista > Vista Pack 1. > Vista Pack 2. and > Windows 7. I think this may be the reason why the Realtek Audio system is not working properly since is running on different software signatures. Please let me know if I should purchase Windows 7 OS CD to resolve this problem. Sincerely, Carlos.