Avast license code disapeared after restart

I cant restart virus protection in vista security center, cant put new license code.
Please see attached the windowd photo which came up when avast starts.
Is that virus or avast decided to force me to buy prof version?
I need urgent help please!

Can you please post a screenshot of the avast! About box, with the Registration key item expanded (= visible)?

Did you restore a full partition backup?
Side note: no avast does not force anybody to buy the professional version.

Ill post it tomorrow, now full system scan running.
But I already uninstalled avast and the new instal initial full check runing.
When I was try to enter license code the field was empty and was not possible paste in the field.

I tried twice system restore but unidentified problem happened and restore didnt work.
Is the orange window source from avast?
If this is virus what is the best to do?

Did you boot? Seems you were trying to add the license key before booting…

System restore does not mess avast license key.
Can you try what Igor has posted before?