Im experiencing unexpected shutdowns whenever i open any game within 10 mins, be it an old game like war3 or a new game like dead space2.. Until i open any game, everything works fine.. This is driving me crazy . Please help

I have attached both my performance report and windows_nts_bsod_jcgriff2 folders
The error window showed
Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7600.2.0.0.256.4
Locale ID: 1033
Additional information about the problem:
BCCode: 116
BCP1: 87E52510
BCP2: 986ADEEE
BCP3: C000009A
BCP4: 00000004
OS Version: 6_1_7600
Service Pack: 0_0
Product: 256_1
My basic pc info
Intel(R) core(TM) i3 CPU 540@3.07Ghz 3.06Ghz
Ram :4 GB
OS : 32 bit OS
Antivirus : Malware Anti bytes And Microsoft Security essentials
I made no updates whatsoever except updating my NVIDIA Geforce 8400GS
drivers
Hoping for a reply soon .
Thank you.