Computer Won't Sleep After Install

This did not solve my problem.

Interestingly, while AVG was removed, the computer went to sleep fine.

Please advise.

Hello Konnor,
Sorry for the inconvenience. Have you installed 'AVG PC Tune Up' program in your device? Do you see AVG PC Tune Up in 'control panel' list of programs?
Thank you.

I did a clean install of AVG 2015 Free on a Vista laptop. After install, the computer freezes when going to sleep. The monitor turns off, and nothing else happens. I have to remove power to turn it off. When I use the "Temporarly Disable Protection" feature, the computer will go to sleep fine. The only component in use is Anti-Virus. The rest are disabled.

What can I do to stop this annoying and potentially harmful problem?

Hello Konnor,
Please run the AVG remover tool : http://aa-download.avg.com/filedir/util/AVG_Remover.exe to completely uninstall your previous installation of AVG program from your PC. Once uninstalled please follow the instructions on the article http://avgread.me/1cvJ6DX to reinstall your AVG program
Thank you.

This did not solve my problem.

Interestingly, while AVG was removed, the computer went to sleep fine.

Please advise.

Hello Konnor,
I understand how something like this can really try your patience.
I have sent you an email with further instructions to be followed to get our additional support.
Please feel free to contact us for any further assistance. Thank you.

No.

(I don't want it if that is what you are going to suggest.)