BSOD randomly (mostly) when idle dxgkrnl.sys

Sounds good. Let us know if you need further help or if the system is now stable.

It always happens just when I start to think it may finally be fixed...

Alright, load setup defaults in your BIOS through the Exit menu. It may say optimized defaults or fail safe defaults (or both). Fail safe is probably the best testing method for stability but may cause some hardware not to work properly. Optimized should work fine, too.

   Warning

Before you proceed with the following, answer these two questions: Are you still under warranty? Does your warranty allow you to open up the machine to check hardware? If you are unsure of the answers to these questions, contact your system manufacturer. WARNING: The steps that follow can void your warranty!!!

Strip down your system to run only the bare essentials: one RAM module, the CPU, motherboard, one hard disk, one graphics card (or use onboard graphics if you have it), keyboard, mouse, and one monitor. See how the system behaves by running Windows for twice as long as it typically takes for you to get a crash. If it is stable, add one piece of hardware back at a time until you get crashes again. Take notes of what hardware you add and how the system responds to the hardware changes.

As you add and remove hardware, follow these steps for ESD safety:

1. Shut down and turn off your computer.
2. Unplug all power supplies to the computer (AC Power then battery for laptops, AC power for desktops)
3. Hold down the power button for 30 seconds to close the circuit and ensure all power drains from components.
4. Make sure you are grounded by using proper grounding techniques, i.e. work on an anti-static workbench, anti-static desk, or an anti-static pad. Hold something metallic while touching it to the anti-static surface, or use an anti-static wristband to attach to the anti-static material while working. If you do not have an anti-static workbench, desk, or pad, you can use your computer tower/case by finding a metal hold in it, such as a drive bay.

Once these steps have been followed, it is safe to remove and replace components within your computer.

I would like to thank you, writhziden, for sticking with me these last couple months. Although the problem went unsolved, your patience and dedication were fundamental in keeping my head level and my stress in check. Unfortunately (or maybe fortunately), I have officially thrown in the towel. Amazon.com has blown my mind with their incredible customer service by agreeing to refund my money on all of the computer parts I purchased from them (which was all except for the CPU). Once the refund has reached my account, I will be turning that money right back around and ordering all different, yet better or comparible, computer parts. From there, I will build my new PC and hopefully put this whole nightmare behind me. Your resolute assistance was invaluable. You are definitely a valuable member of the Windows SevenForums community and you should be recognized as such. Thanks again. I am marking this thread as solved.

You're welcome. I very much appreciate the kind words! If you ever need assistance in the future, I hope you will remember SevenForums.

By the way, there are experts in the Hardware & Devices - Windows 7 Forums who can help you in choosing parts and building the system to make sure everything is compatible and properly assembled. :)