I am a complete zero in German, but I guess you translate it.
I suppose what you installed Windows 10 and then in Device Manager your 6470M became detects as 7400M.
Relax. Theres no solution. I have the same problem and eventually downgrade to Windows 7 and then advise you to.
Please post in the regular forum...not in the RULES AND REGULATIONS
sry i'm first time in this forum.
and no i dont install windows 10. I use windows 7 and have the Problem.