Thanks everyone for helpful remarks and…patience.
Alanrf, I uninstalled Win Defender [rebooted and cleaned leftovers] and did suggested registry changing. Tech Support [thanks!] send me ashdisp file.
After reboot, both ‘evaporated’!
I started to look around.
Task Manager showed nothing suspicious.
I opened Registry, checked RUN…
Bingo!
A few weeks ago, I installed [and forget, never use, nothing checked!] SuperAntiSpyware.
Even no one programs I used show any running entries of it, but there was –SASWINLO.dll
I deleted the key and rebooted.
One more time, reg hack and asdisp on place.
Rebooted…
Yes!!!!!!!!
There are avast! balloons !!!!!!!!
Everything is OK now!
Thank you!