BSOD when started 2 or 3 browser windows or playing games

In addition here is your dump file, it show memory, too.

Code:

Microsoft (R) Windows Debugger Version 6.11.0001.404 AMD64
Copyright (c) Microsoft Corporation. All rights reserved.

Loading Dump File [C:\Users\Richard\AppData\Local\Temp\Temp1_BekoDumps.zip\082412-21949-01.dmp]
Mini Kernel Dump File: Only registers and stack trace are available
Symbol search path is: SRV*c:\symbols*http://msdl.microsoft.com/download/symbols
Executable search path is: 
Windows 7 Kernel Version 7601 (Service Pack 1) MP (6 procs) Free x64
Product: WinNt, suite: TerminalServer SingleUserTS
Built by: 7601.17835.amd64fre.win7sp1_gdr.120503-2030
Machine Name:
Kernel base = 0xfffff800`02a58000 PsLoadedModuleList = 0xfffff800`02c9c670
Debug session time: Fri Aug 24 12:28:33.914 2012 (GMT-4)
System Uptime: 0 days 0:04:11.053
Loading Kernel Symbols
...............................................................
................................................................
................................
Loading User Symbols
Loading unloaded module list
....
*******************************************************************************
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *
*******************************************************************************
Use !analyze -v to get detailed debugging information.
BugCheck 1E, {ffffffffc0000096, fffff80002ad53f0, 0, 0}
Probably caused by : memory_corruption
Followup: memory_corruption
---------

You have to see you computer manufactuer if you think the mb is bad.

I have went through this thread several times. I'm glad you found the cure. Your video card is a great one but it does demand a lot of clean power. You mention nothing about your power supply except it's brand name in your specs. Researching I found with your video card and a mid stream PC the min. is 500W and recommended is 650W. After reading a few reviews I'm of the opinion the Fortron is the middle of the road power supply. The reason I'm mentioning this is because if your quality system is being use for heavy gaming or such you will be working the power supply very hard. If it fails it could take out your very nice video card and mother board, maybe more. I mention this not as a scare but food for thought.