My computer is blue screening while gaming (Solved)

First of, I wasn't quite sure what topic to put this post in, so sorry if I put it in the wrong area. Within the last few weeks, my pc has started showing blue screens only when gaming, it only blue screens after about an hour in. This makes me think that the issue might be the psu since it doesn't happen while doing light tasks like browsing the internet. I RMA'd my ssd and got a replacement yesterday because I thought that was the issue, but I am getting the same result as before. I have ran a few memtests and all of them say that my ram is good. I should also add that I started getting the blue screens when I replaced my case a few weeks back. I have checked to make sure all of the correct psu cables are plugged into each component and all looks good, and I don't see a case causing crashing. Here are my specs, I have owned all of the major components for 1.5 years+ and haven't had issues until recently.

Sapphire Toxic r9 280x
Crucial M500 240gb ssd
G.Skill Ripjaws X Series 16gb (4x4)
Intel i5 4670k @Stock
Asrock Extreme 4
Enermax Black Twister
WD Blue 1tb and 500gb
Rosewill Hive 750w
Corsair Air 540

Thanks in Advance!

Edit: I fixed the problem by switching the cable for my cpu from the 4+4 pin to the 8 pin meant for my cpu. According to my psu manual both should supply the same power, but the 4+4 pin wasn't working properly for whatever reason.

Do you have your graphics card overclocked?

Update motherboard/chipset drivers and graphics drivers. Reset any overclock. Run Furmark and Open Hardware Monitor ( http://openhardwaremonitor.org/ and http://www.ozone3d.net/benchmarks/fur). Watch your CPU and GPU temps and voltage. When/if it bluescreens, record any error messages generated by the bluescreen. Follow up by checking the Windows Event Log. At this point you would try to replicate the problem with a known good power supply, with an alternate graphics adapter, and with an older version of the graphics driver, on the same PC. This will help you narrow down the problem.

That has nothing to do with bsod. That's a cpu issue. His stats say its stock so I'm guessing its still overheating due to an improper thermal paste application or the cooler isn't seated properly.

I've owned a few AMD cards. and I currently own one now, a bad overclock will cause the system to freeze or blue-screen.

Did he overclock the card? I have yet to Bsod on my wifes r9 290. I have that thing cranked.

Probably cause your card is stable, you seem to forget that there is the silicon lottery. I own a Tri-X R9-290, If i push the card core clock past 1100mhz the system freezes. when i had an R9-270x if i pushed the card too high, the whole computer would blue-screen.

My old 290 used to blue screen on adobe flash, and in old drivers it sometimes blue screened and black screened while gaming. My recommendations are:
reinstall drivers,
try different versions of drivers,
remove/decrease overclock,
reinstall windows (sometimes legacy drivers arent fully uninstalled causing issues),
use a different 8/6 pin power cable that feeds gfx card (this one cable I used to feed my 290 "broke down" after too many repluggings, causing lowered voltage and unstable power),
try a different wall socket,
try a different psu main power cable (the 3 pinned one on the back),
try different psu.

I actually have my gpu underclocked to original 7970 speeds, even though my gpu is oced from sapphire. Thr highest temps while gaming are 60 degrees Celsius.

I have been monitoring my cpu temperature. The hottest it gets is 55 degrees C. I have seen my pc shut down in minecraft where my cpu was 40.

When I get back home, I will watch my voltages and see if there is anything weird.

Edit: I would try another psu, but the only othet one I have is a 300w without any pci connections.

i doubt it would be a PSU, issue, if it was your computer would just shut off on you completely. not blue-screen. try reinstalling Catalyst graphics drivers. and check if your motherboard drivers are updated.

https://teksyndicate.com/videos/windows-event-log-explained
Take a look in your windows event log before and during gaming, see if there are any hardware errors. (Thank you Wendell for making this)

Maybe under clocking your GPU is causing the BSOD's.

Okay, I believed I fixed the issue. I changed the cable that was plugged into my cpu from my psu. My psu has two non-modular cables meant for the cpu, one 8 pin and one 4+4 pin. I had the 4+4 cable plugged into my cpu, but for whatever reason it was only getting the power of one 4 pin. I changed the 4+4 pin to an 8 pin and haven't had crashes ever since. Thank you for all of your suggestions!

You're welcome