I keep getting occasional Blue Screens of Death, and I'm about to scream. I hadn't installed or uninstalled anything recently that I could think of that would cause a problem. When I checked my minidumps, I've got mostly fastfat.sys errors, but also some SiWinAcc.sys and nv4_disp errors, as well. I also got a hardware error, but it was related to the fastfat.sys error. I'm just wondering what could cause these and if the four errors are connected. I've attached the more recent dumps for each error. Thanks so much for your help, and I'm so glad for this site!