Thanks for guide; I'm planning to give it a go in the next few days to try and troubleshoot some issues I'm having and install a slightly older driver. Before I do, however, I wanted to check something. I noticed in the whocrashed (which I was using to open a dmp file) utility's local driver list that I had the usual nvlddmkm.sys with the driver version description matching the driver I have installed (320.49), but above it is nvbridge.kmd file stored in system32/drivers that is described as a windows vista kernel mode driver (I have windows 7) version 267.85. Would I be right in assuming this is a left over file from an old driver that shouldn't still be around? If so, would this file be removed if I followed your guide? If it does need to be removed, but wouldn't be removed following the steps in your original post, how would you advise I remove it?
I apologise for how poorly worded this is and if it's a silly question; I haven't slept in a while and I think it's taking it's toll! Thanks again for the guide.