Ok i will make it simple:
When i cold start my machines (windows 7 64) and then i open my mozilla i take this:
When i restart my mozilla i take this:
As you see in the first one photo the bar dont show the bookmarks.This problem exist in all version of windows vista and above and only after a cold start of any machine.
In previus version (before 2014) this problem can be fixes easily with this:
disable Monitor the system for unauthorised modifications in behaviour shield but now in 2014 we cant.
I found that if i disable the execution protection also it solves the problem but i lost a big part of this security program.
This problem exist and has nothing to do with repair or reinstall.
Someone staff of avast is better to see this because if it exists in mozilla maybe has some bad effects in another programms.
Thnks for ur time.