Hello, I just had the exact same problem. The last few days I've gotten this blue screen once or twice every day. I got the same error code as you, Driver_IRQL_NOT_LESS_OR_EQUAL (e22w8x64.sys). I play Minecraft alot, and this server I use to play on I usually have 300 FPS, but after the first blue screen I got, I had like 30 FPS while playing. I knew something was wrong, so I started trying to find the answer, and that wasn't easy. I tried to format my laptop etc but nothing worked. My laptop was not overheated at all, and when I looked at task manager while running different programs, nothing took too much RAM or CPU.
My laptop is a MSI ge60, 6 GB RAM, Intel Core i5 processor, NVIDIA Geforce, Windows 8 etc etc. A pretty good laptop so I knew something was wrong when my 3 months old laptop started acting like this. I tried to find the answer for almost a week, and I finally did. What you have to do is to disable "Killer Network Manager":
1. Click on your start menu. Search for "msconfig" and open it.
2. Click on the "Services" tab, look for "Qualcomm Atheros Killer Service" and de-check it.
3. Click on the "Startup" tab, then click on "Open Task Manager".
4. Click on the "Startup" tab, look for "KillerNetManager". Right-click on it and then click Disable. Close the Task Manager.