what happend

I can play it normally for month and nothing happened and yesterday in support respond says

Crash Report #160050021 A Crash in your Intel Video Driver Process has occurred. Please make sure you have the latest video driver. You can get the latest driver from Intel directly at their website: downloadcenter.intel.com. Crash reporting made possible by www.bugsplat.com

So the question is how? It bug or just normal crash problem? Because it sometime happened and most of time I can play with no problem so what should I do?