To follow on from the above, can anyone guide me through a step-by-step process for downgrading from the 14.5.0.1081 to 12.9.0.1001 driver on a Z97-based Win 10 64-bit system?
Googling a bit seems to suggest it is not as simple as running the SetupRST.exe file and re-booting, and my brain is suffering overload. Getting it wrong looks like it could result in a non-bootable machine, so ideally I';d like to get it right first time! Many thanks.