How to Fix a Disabled Graphics Card on a Laptop or PC: Reset Your Graphics Card from a Black Screen
How to Fix GPU Detected With Wrong Model Number?
Amazon.com: 2GB Graphics Video Card Replacement for Apple iMac Mid-2011 27 Inch A1312 Core i7 3.4 MD063LL/A MD063 Desktop PC Computer, ATI Radeon HD 6970 GDDR5 2 GB, New GPU Upgrade Repair
EVGA Double BIOS Added in Some GTX 700 Series Graphics Cards
How to recover from a bad video BIOS flash | TechPowerUp Forums