Here is the problem: My computer was functioning fine and had been on for several hours.I opened photoshop and started editing some photos, minimized photoshop briefly to access the desktop and explorer.exe crashed. I opened the task manager and checked the applications, explorer was not running. I attempted to "start new task -> explorer.exe" and it gave the "Windows cannot opened the specified path, device, or file" error. I tried restarting and explorer.exe never even attempted to start. I went into safe mode but explorer does not open there either. I tried finding the specific location of explorer.exe using task manager -> new task and found the explorer application but it just gives the "Windows cannot opened the specified path, device, or file" error. I browsed the internet looking for solutions and tried several things that did not work, most of the time the divergence comes from the fact that other people with this problem are able to get explorer.exe running in safe mode. I cannot access system restore (or do not know how to do it using only the task manager). I tried to find and delete "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe" as this had worked for many people but the file was not there. I ran several registry fixers and Memtest 86 with no results. Virus scanners found no viruses and I have not downloaded or installed anything in days if not weeks. What should I do next? Can I try using sfc /scannow from the task manager?