BSOD playing games and just randomly, error 0x00000124

[Sir Khem]

(I'm new to using computers, so please bear with me)
So during April, I started building a computer. After I building my computer I had no problems at all with it, but after a few start ups and shutdowns it just began to shut off randomly when I played games, like Skyrim and Payday 2. I have no idea what to do. Please help.

 

[Arc]

Are you overclocking? As you are getting BSODs, you should stop overclocking and run all the hardware components like CPU, GPU and RAM to their default settings. Also set the BIOS to default, too.
How To Clear CMOS (Reset BIOS)

Test your RAM modules for possible errors.

How to Test and Diagnose RAM Issues with Memtest86+
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Run memtest86+ for at least 8 consecutive passes.

If it start showing errors/red lines, stop testing. A single error is enough to determine that something is going bad there.

Stress test the Graphics Card using Furmark.

Video Card - Stress Test with Furmark
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Take a screenshot of the furmark window before closing it. Upload the screenshot for us. Also let us know if you have experienced any crash/BSOD and/or artifacts during the test.

Stress test the CPU.

Hardware - Stress Test With Prime95
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It saves the result as a .txt file in the prime95's folder. Upload the file for us.

Check if the Power Supply Unit (PSU) supplying adequate power to the computer or not.

eXtreme Power Supply Calculator - The only power supply calculator trusted by PSU manufacturers and computer enthusiasts
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Also let us know the wattage of the installed PSU.

Is the computer hot? Report us the heat of the computer after a couple of hours of your normal usage. Upload a screenshot of the summery tab of Speccy. Alternatively, you can publish a Speccy snapshot too: http://www.sevenforums.com/tutorials/311593-speccy-publish-snapshot-your-system-specs.html .

 

[Sir Khem]

Hey, thank you so much for responding to my cries! First of all I haven't done any overclocking at all. So, I reset my BIOS to the default, ran the Memtest and I had no errors, and I used the FurMark test and I ran it for a while.(I turned it off after I took the screenshot.) I had no BSoD, crashes or "artifacts" (Kinda confused what an artifact is. I'm guessing its a visual glitch of some kind?) I also tested the CPU and I think I passed the test. I attached the results. I got a snapshot The eXtreme Power Supply Calculator recommends 464w. My PSU is a EVGA Supernova 850wG2 80 Gold.

Speccy Snapshot: http://speccy.piriform.com/results/JGpmAeLC6aEvc4jgwM7notK

 

[Arc]

It appears that you ran prime95 for a very little time. Did you miss the point 6 there?

[SIZE=3][B]6.[/B][/SIZE]  Leave the test running for up to 2 hours, unless errors occur sooner.  Errors will show up by one or more of the workers stopping.

And, how long you ran memtest86+, and for how many passes?