Antivirus won't work

Hello Debbie,
We apologize to hear about the inconvenience caused to you. Could you let us know what is the error code you are receiving when uninstalling AVG? Please try to run the AVG remover tool to remove all the remnants of the failed installation and re install AVG using offline installation file based on your OS ( 32 bit or 64 bit).
To run remover tool, please visit http://www.avg.com/tools#tba2 and click on "AVG Remover" to download the remover tool and run it on your PC. It will ask you to select which product you would like to uninstall. Please select "AVG Anti Virus" and follow the setup instructions to uninstall AVG. Once the tool is run, your PC will automatically reboots. After the restart, please check if a folder with name AVG Remover is created under C:\ and remove it.

Hi,
I have installed AVG Free.  Since I have put it on, it keeps coming up with error codes & won't enable. 
It won't let me uninstall the program, it won't let me do a system restore, it has basically just taken over the operation of the computer.
How can I remove it and start again?

Hello Debbie,
We regret for the inconvenience caused. Could you please send the screenshot of your error messages so that we can assist further? Please click on the following link http://support.avg.com/SupportArticleView?urlname=How-to-create-a-screenshot  to send the screen shot. Thank you.

Then 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 .
Please visit this webpage http://www.avg.com/us-en/download.prd-afh-free to download the offline installation file.
Run the downloaded file to start the installation process.
Follow the instructions on your screen.
Complete the installation and restart your computer.
Please, feel free to let us know if you require any further assistance. Thank you.

Debbie, For your info, just in case that you are unaware, you can post the screenshot here in your topic. Click on 'Answer' & then click on the 'Image' [mountain symbol] & follow the instructions. 
AVG Guru

Hello Debbie,
We apologize to hear about the inconvenience caused to you. Could you let us know what is the error code you are receiving when uninstalling AVG? Please try to run the AVG remover tool to remove all the remnants of the failed installation and re install AVG using offline installation file based on your OS ( 32 bit or 64 bit).
To run remover tool, please visit http://www.avg.com/tools#tba2 and click on "AVG Remover" to download the remover tool and run it on your PC. It will ask you to select which product you would like to uninstall. Please select "AVG Anti Virus" and follow the setup instructions to uninstall AVG. Once the tool is run, your PC will automatically reboots. After the restart, please check if a folder with name AVG Remover is created under C:\ and remove it.