Hello Martin. I suggest you to try Repair of AVG after that restart your system once. Please follow the instructions mentioned in the following link http://bit.ly/1GnFMpr .
Please feel free to contact us should you need any further assistance.
I have the same problem but it refuses to uninstall or repair
This actually worked, thank you 
Hello mates, gals,
About an hour ago my AVG Antiviruss Free 2015 was working just fine when suddenly all the components changed their status from "Active" to "Unknown". I can still see that AVG is trying to turn them on, so it flickers from active to unknown every once in a while, but without success. Windows itself keeps spamming "Turn on the AVG" every 5 seconds, but when I press on the popup it asks me if I want to open up "avgwsc.exe" even though it doesn't work either.
At first I tried to contact the customer support through the chat, but for some reason it just redirects me to "https://support.avg.com/support_contact_form#" … so basically, doesn't work. That's why I'm asking the forum.
My computer/OS specifications (just in case):
OS: Windows 7 Ultimate (Service Pack 1), 64 bit
Ram: 4 GB (DDR2)
Processor: AMD Athlon 64 X2 Dual Core 6000+ 3.10 GHz
Graphics: NVIDIA GeForce GT 220 (Internal: GT215)
I have the same problem but it refuses to uninstall or repair
Hello Martin. I suggest you to try Repair of AVG after that restart your system once. Please follow the instructions mentioned in the following link http://bit.ly/1GnFMpr .
Please feel free to contact us should you need any further assistance.
This actually worked, thank you