Not 100% sure this is the right place, since I am unable to get a dump file, but it is bsod related. I've got a windows machine that periodically (currently, every week or two) has been getting to a state where it won't boot. Each time is preceeded by an unexpected_store_exception, or critical_process_died error, and is often then followed by an innaccessible_boot_device (I've seen a few variatioins of this). Generally once I get the first bsod the machine won't actually boot until I reinstall, which is a tremendous pita. Startup repair tends to either fail, or not find an issue. Rebuilding boot index has done nothing, and I've seen restoring from an ISO either fail in the restore process or succeed, but keep throwing up the same error on boot. As far as I can tell whatever that initial error is is corrupting something in my boot files badly enough that the only fix is a clean install. That being said, I don't understand why an ISO wouldn't do the same. I've replaced memory, ssd (system, not all the 8 drives in the pc. I do however remove the extras while installing to be sure the boot files are definately on C), motherboard, cpu, and even a wireless card I thought might be causing the problem. As much as I like to think this is a hardware issue, I find it hard to believe that I got 2 pieces with the same problem to make this reoccur. The only other thing that has worked in the past, though now seems not to, is unplugging the extra drives and then running a repair on just C. That being said, right now it seems frozen at Preparing Automatic Repair. Chkdsk and memory diagnostics have never turned up issues. Any ideas? I don't even know how to troubleshoot it since I can't even get into windows to get a dump. Even if I could, the bsods seem to often stall at 0% and require hard restarts. I'm running whatever the most recent slow track insider preview is. Drives are wd green 3tb drives for storage, and a samsung 850 pro for C. Other details available on request.