Hello,
Dirty Bomb used to run without any problem on my laptop until recently i does not start. Steam only says i am playing Dirty Bomb for 5-10 seconds then nothing happen.
The weird part is the game will only run when i run it in Safe Mode (with networking).
Steps i tried to fix the game
-Reinstall
-Off antivirus
-changed antivirus
Still no fix
Please help 
Hello.
Please open msconfig.
Select boot.
Click on advanced options.
Ensure Debug is unchecked.
If it is checked, uncheck it.
Restart your pc and try launching Dirty Bomb again.
Good luck! 
If you have AVG please follow the steps described in this guide.
https://support-dirtybomb.nexon.net/hc/en-us/articles/208759216--Issues-launching-Dirty-Bomb-
Go to the upward arrow and right click the STEAM icon. Right click & click exit & then reopen STEAM. Game should work or simply restart your PC. Don’t listen to the other guy. If that still doesn’t work reinstall steam & reinstall Dirty Bomb.