I’m glad your issue is solved. 
However, there isn’t a Start Menu in Manjaro. 
“Start Menu” is a typically Windows(ism) that has always been somewhat contradictory – I mean, clicking Start when you really want to Shut Down – How weird is that?
In Manjaro (as with most Linux flavours) the widget is often called the Application Menu; in KDE Plasma, we even have Application Dashboard and Application Launcher as possible alternatives.
Right-click the icon and choose Show Alternatives if you would like to try these options for yourself.
Hi @DANIL10RUS and welcome to the Manjaro community.
As a new forum user, please take some time to familiarise yourself with Forum requirements; in particular, the many ways to use the forum to your benefit.
To that end, some or all these links may be invaluable:
- [How to] Request Support
- [How to] Find Error Logs
- [How to] Find System Information
- [How to] Post
Screenshots andLinks
Please avoid posting screenshots of text. - [How to] Post Command Output and File Content as Formatted Text
- Tutorials (category) There’s much to be found here!
- Forum Rules
- Strict Forum Rules and Guidelines
Last, but not least, the Update Announcements, which you should check frequently for important update related information.
An issue may be directly related to a particular update; these announcements should generally be checked before posting a request for support.
I hope this is helpful.
Cheers.