Random Black Screen/Crash - I have a minidump!

Hey everyone. I recently built my first custom PC. Here is a link to the build on PCPartPicker:
AMD FX-6300, Sapphire Radeon R9 270, Corsair 300R - Ordered build updated - ajthemacboy's Saved Part List - PCPartPicker

Since then I have had random black screen issues. At one point I reinstalled the OS, and they still occur. You may notice the R9 270 needs a 450W power supply at the least.

At first look you would think this is the problem, but it's not. Before the R9 270 I had an EVGA 750 Ti, which only uses like 60 watts of power or something, as well as a CM430W power supply, and the black screen issues still occurred.

First I returned the power supply for a CS450M, black screen still occurred. Then I returned the 750Ti for an r9 270, and the issue still occurs.

If it's not the graphics card, power supply, or OS, what should I do?

The dump file is attached. It blames NTOSKRNL.EXE, but I have no clue what this is or how to fix it.

Thanks in advance for your help.

Update: Please delete or ignore this post. The update post is now at:
http://www.eightforums.com/bsod-cra...-crash-i-have-minidump-sf-zip.html#post430188