system
4
The first thing to do is verify that Avast is listed in your “Startup” programs
Click on the Windows world ball, type “Startup” and then click on “Startup Manager”.
If Avast is listed there then check the startup path.
It should be C:\Program Files\AVAST Software\Avast\avastUI.exe
The “regkey” should be "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run"