Blue screen shutdown.

Giganews Newsgroups
Subject: Blue screen shutdown.
Posted by:  Peter Jason (…
Date: Mon, 23 Sep 2013

Win7  SP1  Nvidia GEForce GTX480

While using the internet I get occasional black
screens that resolve soon after.  But on this
occasion I get a blue one with a shutdown.
When I startup again and check "Problem Details" O
get the following...

A problem with your video hardware caused Windows
to stop working correctly.

Problem signature
Problem Event Name:    LiveKernelEvent
OS Version:    6.1.7601.
Locale ID:    1033

Files that help describe the problem

View a temporary copy of these files
Warning: If a virus or other security threat
caused the problem, opening a copy of the files
could harm your computer.

Extra information about the problem
BCCode:    117
BCP2:    FFFFF880059A5E30
BCP3:    0000000000000000
BCP4:    0000000000000000
OS Version:    6_1_7601
Service Pack:    1_0
Product:    256_1

Is this serious and what do I do now?