A week or so ago I downloaded a trial program, installed, and used it. Shut down for the night. Next morning when I booted up, I had the BSOD. I had to do system restore. Fortunately I had set a restore point before installing the software. It was no loss as I had already decided I wasn't going to purchase the program. But I'm wondering what's going on when I install new programing. Why does it work fine until I reboot? I realize it's a conflict somehwere, but I have no idea how to find out what it is.