AVAST 2017 START UP NOT RUNNING!

I have the same problem with avast 2017 start up after the last update it started not runing !! Should I restore to the previous version and then try to update it again??? skipe :: mario_sp23

I mean I have to turn on Avast every time I log in on my computer what is really uncomom so far! Can anybary help me out please!!! Thanks anyway!!

Version : 17.2.2288 build 17.2.3419.0

I already tryed several times to repair and reinstal it throughout avastclear and nothing changed at all

Repair Avast:
Control Panel> Program and Features (Add/remove program)>Select Avast> Select Repair. Reboot when completed
https://www.avast.com/faq.php?article=AVKB204
If Repair doesn’t fix the problem, try the following:
Clean Install of Avast:
https://goo.gl/4Ptzkf