Yes I tried all the above. Yes, I did add new hardware a big diff, the mobo. However, it was as close to the old as it could be. The other C: works fine. However, you did get me thinking. I had a sound card in the old configuration. I took it out because the new mobo should have that working. The other C: may have predated the sound failure on the mobo. I can't remember. The sound was the first thing to go maybe a year and 1/2 ago. Every few months a drive or USB port would die. I had plenty of both. It wasn't till it was clear that the erosion of utility wasn't going to stop that