|"I checked the CPU and GPU temps and they were fine." Please post the temps from HWMonitor (all) both from idle and after gaming for 10 minutes to be sure.|
Post motherboard model.
"CPU: Intel i7 4790k 4.00 GHz" the new Devil's Canyon CPU's work best when you update to the latest BIOS available for your motherboard, Yes, that includes the Z97 chipset motherboards since these were released after most of the motherboards were released.
Use the onboard fan ports BUT PLEASE list how many fans, where they are in the case, and how they are oriented (intake/exhaust) since the wrong configuration of fans can be worse than only a single exhaust fan. NEVER use side fans!!!
What heat sink (CPU) are you running and how did you apply thermal compound (too much or spreading it is worse than too little since it is hard to put too little). The actual temps will help confirm these issues.
The more information you supply, the easier it will be to hep you. We will explain the why's as well as pointing to the most likely causes to help you understand and to help make your machines work better for you.
You have to be a little bit crazy to keep you from going insane.