is AVG required for computers? Error Vprot.exe displaying and I can't do anything, help!?

[Love L]

Is AVG required for a pc to properly function? My grandma's computer has AVG 201 but she uninstalled the "AVG security toolbar" and now its showing her messages like "information at 0x00000000" and #memory can jot be written." It also shows the vprot.exe error, but I am not able to click on google chrome or much else than that. Help me, please. I'm afraid it broken! I've been looking this up, but I couldn't find the exact situation like mine (apparently everyone had a fine time uninstalling the toolbar.) Also, I've been getting a lot of mixes information on what to do. There is an option to "terminate program" but I'm terrified to click it, in case the computer just dies. I have no idea what to do, please, please help!

[Shawn H]

AVG is an antivirus/security product and is not required. Uninstalling certain parts of the product may or may not have an affect on computer performance. Uninstall the product completely and reinstall or perform a Windows System Restore back to an earlier date.

[Redstone]

Sometimes uninstall executions don't go as expected which end up with screwy registration entries that try to run programs that no longer exist.

AVG has a removal tool that can do a thorough job.

http://www.avg.com/ww-en/utilities

[sardar munir]

try the c cleaner software