Games on my computer keep Blue Screening error info in thread

[greyshot]

I have had this problem for a while now, I built my rig this summer and games I installed on here have been working just fine. But as soon as I got Left 4 dead, and a bunch of other games on steam. I've noticed a lot of game BSOD'ing (blue screen of death) on me.

These are the games i have had the problems with:
Alien swarm: wont boot, BSOD after the first loading screen
Dead Island: BSOD after selecting my character for campaign
Killing Floor: BSOD when click on LAN tab for finding games, BSOD when trying to host a game.
Left 4 dead: BSOD after loading screen before main menu
Left 4 dead 2: same as left 4 dead 1.
Operation Flash point: Dragon Rising: BSOD before game even starts.

I have tried re installing these games, and the problem still persists.
Here are my Computers Specs:
Intel Core i7-2600 CPU 3.400GHz 3.70 GHz
8GB RAM
64-bit Operating System
NVIDIA GeForce 560 2gb

Here are some of my NVIDIA control panel settings:

[3d settings 1]

[3d settings 2]

[nvidia card info 1]

[nvidia card info 2]

Edit: Just found out that Rainbow 6 vegas 2 has the same problem, blue screened just as soon as clicked on internet games under terrorist hunt.
Here was the Error Statement:
Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7600.2.0.0.768.3
Locale ID: 1033

Additional information about the problem:
BCCode: 3b
BCP1: 00000000C0000005
BCP2: FFFFF800036890A3
BCP3: FFFFF8800EE55E90
BCP4: 0000000000000000
OS Version: 6_1_7600
Service Pack: 0_0
Product: 768_1

Files that help describe the problem:
C:\Windows\Minidump\122611-27097-01.dmp
C:\Users\(myname)\AppData\Local\Temp\WER-62259-0.sysdata.xml

 

[M1GU31]

how many sticks of ram are they 4gbx2 or 2gbx4 sticks try taking them out one by one like say you got two 4gb sticks in it take one out and try it like that if it does same thing then put the other one back and take the other one out and if it doesnt do that then there's something wrong with the ram stick that was taken out i just want to see if its a ram problem and if the problem persist then it might be a video card problem BSOD are caused by memory problems this is why i want you to try this