ya man, test each card till error appears, replace riser on the faulty one may fix it (hopefully) most risers have a terrible fail rate, sometime right OOB, sometimes after a few weeks.months mining
i run also a free iobit softwear called "driver booster". free and works. it usually finds drivers for "PCI-E" stuff, and have had it help having all those updated
keep in mind you DONT need all the audio drivers for each card installed, as they will just eat up resources