SemtexVa, out of curiosity what is the driver version on your cd? And what was your procedure for changing drivers? Did you run a driver cleaner like DDU when upgrading? Just seems odd that you can go back to this original driver and the problem goes away. Like, voltage issues should be there for all drivers, should they not? Never heard of Catalyst packages effecting stability . An OC yes. But driver change on a stock card...? Weird.