PLEASE HELP!! Windows 7 64 bit BSOD

I had a blue screen of death so I re installed Windows 7 64 bit and everything seemed OK.
Now my pc randomly shuts down mid use with the following error message....
Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.2.1.0.768.3
Locale ID: 1033

Additional information about the problem:
BCCode: 116
BCP1: FFFFFA8003F8A4E0
BCP2: FFFFF8800FA6CD14
BCP3: FFFFFFFFC000000D
BCP4: 0000000000000003
OS Version: 6_1_7601
Service Pack: 1_0
Product: 768_1