Thanks for the tips and feedback. to clarify, I am NOT mining on this GPU, just using it for graphics on my personal PC. All of my mining rigs have been on SMOS for many months for just this reason of continual problems with Windows/Radeon drivers.

I think the best option at this point would be to flash the 470 back to original timings, but I have long lost my records of those timings that i took a snapshot of before flashing.

What would be the recommended method to flash back to factory timings?  It's been about 5 years since I strapped these 470's and I'm sure things have changed a lot since then.

Thanks again!