Try to start Suricata from the GUI. If it fails, then click on the LOGS VIEW tab and then select the suricata.log file in the drop-down for which log to view. Read through that log, or post its contents here for assistance. There should be an error in that log file describing the problem. Suricata is pretty good about letting you know what it does not like.
In the rare event that log is totally empty, then the next possibility is that the Suricata installation itself is corrupt or failed to complete. You can either try deleting the package and installing it again (you won't lose your current settings), or you can try this at a shell prompt to be sure Suricata can actually run:
suricata -V
That should print out some version information and exit. If it prints any error message, then you will know what's up. But run this command only after checking the suricata.log file that I mentioned previously.