Total scan doesn't start after installation software

Now I see my question back.It's scanning again.

I have an old Dell latitude D500 on XP PRO.
I have AVG Free on it.
I installed Paragon Drive Copy 14 for XP.
During the installation I had to disable some functions of AVG.
Now I cannot start total scanning.
I can scan shell extensions and a scan has been planned on 23-9.
I cannot start it now.I followed several instructions.Open the button,reactivation of the license,starting the computer again etc.

Now I see my question back.It's scanning again.

Hello Huibert.

If you are facing any issue with AVG please feel free to get back to us.
Please try keep whole conversation in one question/thread to speed up resolution.

Thank you.