Trying to open my security to change it

Other products
3

Other posting (https://support.avg.com/answers?id=906b0000000D5A6AAK).
AVG Guru

1

AVG PC tune-up did you told me, now I really stuck! I did the back-up part, and now cannot get back to the part to change the password to 0.
it says Default   (no set value)  on the Registry 

Stumped now for Sure !

2

Other posting (https://support.avg.com/answers?id=906b0000000D5A6AAK).
AVG Guru