Avg PC Tuneup update

Hello Cynthia,
We regret for the inconvenience caused. We would request you to run AVG remover tool to completely remove AVG and then re install it.  
Please  click this link http://aa-download.avg.com/filedir/util/AVG_Remover.exe to download and run the AVG Remover tool.
1. Please select the AVG products which are shown in the remover tool window and then start removal process.
2. After the remover tool process is successfully finished, restart your computer.
3. After the restart,  manually delete the AVG Remover folder in the C drive of My computer.
4. Once uninstalled download the installation file using the link : http://www.avg.com/download to reinstall your AVG program.
Please feel free to get back to us for further assistance.
Thank you.

Hello Cynthia,
We regret for the inconvenience caused. We would request you to run AVG remover tool to completely remove AVG and then re install it.  
Please  click this link http://aa-download.avg.com/filedir/util/AVG_Remover.exe to download and run the AVG Remover tool.
1. Please select the AVG products which are shown in the remover tool window and then start removal process.
2. After the remover tool process is successfully finished, restart your computer.
3. After the restart,  manually delete the AVG Remover folder in the C drive of My computer.
4. Once uninstalled download the installation file using the link : http://www.avg.com/download to reinstall your AVG program.
Please feel free to get back to us for further assistance.
Thank you.

I can not get my AVG PC tuneup to update…keeps saying cannot be installed…original files on computer may have been changed…I dont have a clue what that means because I dont know what could have been changed