Cannot complete installation of AVG free antivirus

Hello Marty,
We understand how something like this can really try your patience.
To get your issue fixed, we request you to run AVG remover tool in your pc and then install AVG Antivirus free to get it fixed.
To run AVG remover tool follow the below steps :
Click on the below link to download remover tool
http://aa-download.avg.com/filedir/util/AVG_Remover.exe
Accept the license agreement and then choose AVG Product and remove it.
NOTE: Once the AVG Remover Tool has done with its process. Please go to the drive where you installed this tool and look for a folder named as "AVG Remover" and I request you to delete it manually.

Hello Marty,
We understand how something like this can really try your patience.
To get your issue fixed, we request you to run AVG remover tool in your pc and then install AVG Antivirus free to get it fixed.
To run AVG remover tool follow the below steps :
Click on the below link to download remover tool
http://aa-download.avg.com/filedir/util/AVG_Remover.exe
Accept the license agreement and then choose AVG Product and remove it.
NOTE: Once the AVG Remover Tool has done with its process. Please go to the drive where you installed this tool and look for a folder named as "AVG Remover" and I request you to delete it manually.

To install AVG Antivirus Free 2016 we request you to use the offline installation. To determine whether your OS is a 32-bit or 64-bit, please click on this link. http://support.microsoft.com/en-us/kb/827218
For 32 Bit : http://files-download.avg.com/inst/mp/AVG_Antivirus_Free_x86_694.exe
For 64 Bit : http://files-download.avg.com/inst/mp/AVG_Antivirus_Free_x64_693.exe
Feel free to contact us for any further assistance. Thank you.

Installation stops with following error message:  
 Error code: 0xC0070643
Description: Event exec_finished