MT5 Not Working

 
My Metatrader 5 is not working when I'm online. When it launches it quickly closes but when I'm offline it doesn't close itself. Any help?
 

It may be anything ... for example - opened charts with indicators or EAs on it (if yes so close all tthe charts) ... it may be computer problem ...

To know exactly about what happened so - (in MT5) go to Files - Open Data Folder, and look at the log files for example:  and C:\...\MetaQuotes\...\logs