'y a rien de drôle 
Dans ce cas là, ouvre un ticket (tout en bas du lien donné http://support.gearboxsoftware.com/entries/22129708-pc-general-crash-troubleshooting-solutions )
If you’re still experiencing problems after this, submit a ticket and we’ll troubleshoot from there.
As part of that troubleshooting, a diagnostic file called DxDiag.txt would be extremely helpful. To create a DxDiag and send it back to us, please follow the instructions below:
1) Press and hold the Windows key and the letter R on your keyboard
2) Type dxdiag into the prompt that appears.
3) Click OK.
4) Once in the DirectX Diagnostic Tool, click Save All Information…
5) Select where you want to save DxDiag.txt and attach that file in your ticket.
C'est la meilleure chose à faire pour qu'ils corrigent ça au plus vite.