Guys, this is ridiculous. I'm 100% positive this is NOT a hardware issue but at this point, it almost seems like getting a new computer entirely would fix this retarded issue. Before I explain my history on this, I'll post my system. Intel Core i5 4690k @3.50Ghz Corsair Vengeance 16GB (2x8GB) 1600Mhz RAM EVGA GTX 660 FTW Sig2 2GB GDDR5 Samsung 840 EVO 128GB SSD (Windows C:\ Drive) ASUS Maximus VII HERO Motherboard Corsair HX750i Modular PSU So I had this issue on WIndows 8.1 a long time ago which I was pretty sure I fixed but don't know how. I didn't have a TDR for months, and then like an idiot I decided to update my drivers. (My driver version I was on was 347.52) Worst mistake I've ever done. Updated to the newest drivers and the TDR nvlddmkm bullcrap came back. I called EVGA up and they said maybe something was messed up in the OS, since we both know it's not the card, as I've RMA'd it before thinking it was and I had the same issue with multiple PSU's and GPU's. Then I tried to Rollback to 347.52 and the issue STILL started happening, so I said screw it and upgraded to Windows 10. Clean install and everything. Guess what, STILL HAPPENING!!!!!!! What the hell is wrong with these drivers? Steps I've taken: Downclocked card with MSI Afterburner - FAILED Tried lowering Memory Clock - FAILED TdrDelay settings in Registry - FAILED Updated Realtek HD Audio Drivers - FAILED Upped Voltage on GPU - FAILED Rolled Back to other Drivers - FAILED Uninstalled Drivers with DDU in safe mode - FAILED Turned off Hardware Acceleration in Chrome - FAILED My card and CPU are NOT overheating either. They're quiet cold in fact. 40 c on CPU in games, and 60-75c on GPU in game. This is mainly happening on the one game I play the most. An MMO called Aion. It's old but still very popular. Amongst so many other popular "solutions". When the nvlddmkm error occurs, my Cards clocks go from 1071mhz down to 526 mhz and are stuck like that unless I reboot the PC. I used to use EVGA Precision but when I updated my drivers back on Windows 8.1, with it, when I'd load up Aion, the login screen would be black unless I shut it down. Used MSI Afterburner and never had the issue. I use ShadowPlay and all that good stuff, and never had this issue before. Even a System Restore WOULDN'T FIX IT! What, do I do!?!? Also how is anyone using Windows 8.1 NVIDIA Drivers on Windows 10? I tried using the 353.38 but it installed and never adjusted my resolution and acted like nothing changed... Please someone help me, I'm literally at my wits end with this.