AVG Antivirus Failed installation

I have been trying to install the paid version of AVG Antivirus and it has failed 3 times I have gotten the same error message 3 times now. This error is:

Error code: 0xC0070643
Description: Event exec_finished
I am quite upset about this because I paid $60 for this program only for it to fail to install on my program. If possible I was wondering if somebody could lend me a hand with this error and help me find a way to install the program because I have heard great things about this program and would hate to have to find another one to use instead. For extra information I have previously had an antivirus program on here but it expired a long time ago and came with the laptop.