Hello Mei,
You can find answer to your question together with your another post here https://support.avg.com/answers?id=906b000000057Gw .
Please try keep whole conversation in one question/thread to speed up resolution. Thank you.
I already deleted the old antivirus software and tried to install AVG Antivirus.
It is my 2nd pc but it says "Your AVG Sales Number has already been registered in our database".
Don't know what else to do. I installed it to my first pc without any problem.
Hello Mei,
You can find answer to your question together with your another post here https://support.avg.com/answers?id=906b000000057Gw .
Please try keep whole conversation in one question/thread to speed up resolution. Thank you.
Mel, Also in future please refrain from carrying out multiple topic postings on basically the same subject! You won't obtain an answer to your query any faster!.
AVG Guru