@Asyn
Thank you, unfortunately it doesn't work, I don't actually know if my CPU supports SSE2 or not, however this is what happens:
[doesn't view my image]
As a note, I tried this on two different computers with similar characteristics, and it just gives the same.
In the end, I'm afraid I will have to abandon Avast. Pretty sadly indeed, as I had been with it (and also promoting it to my friends!) for some like 10 years.
Thank you anyway