Hi,
I have the same problem as tbhuy. I have MSI GT70 0NC with dead GTX670M. So I have AMD HD7970M original MSI from GX60 model with heatsink. When I tried it, the fan speed is full. Diode of power button has red color. When windows 10 installed the driver for HD7970m, it went to BSOD.
So I tried flash the latest official bios .10U (for Win7 models nonraid) and latest EC firmware 1414, situation is the same.
Please can you help me? I wouldn´t to buy any graphic card, when I have 100% working MSI HD7970m.
Thank you!