Update - - - I am 99% sure the restarts were caused by the Brother printer drivers. Specifically, a program called Brother PowerENGAGE that is installed by the driver installation software. Please see this:[URL] Quote: "... but in addition to the other suggestions, look for "Brother PowerENGAGE" program in Control Panel. Remove all versions of "PowerENGAGE" program from any vendor. I have seen it come with Brother and Xerox printer software and it is used for advertising, usage stats, etc., BUT the POS software sets up a scheduled reboot that can happen multiple times a day without warning. People working away happily suddenly had their computers reboot on them, and after removing that "PowerENGAGE" program, they stopped rebooting." I'm quite sure that's the cause.  Just in case anyone else has the same misfortune, this is how I found it: Look in the Windows Scheduled Tasks history in Event Viewer. Applications and Services Logs > Microsoft > Windows > TaskScheduler > Operational That's the history of all scheduled tasks that ran. Right around the time of the restart - PowerENGAGE ran. Put 2 and 2 together. Bingo. Gotcha. Over and out.
Hi, I have a brand new Optiplex 5000 SFF desktop, about a month old. Win 11 Pro 22H2. All drivers are up to date with Dell Command Update. Nothing major installed other than Office Pro 2019. It restarts at random once a day, almost every day. Someone could be working on it, and boom, down it goes, restarts and comes back up. This is not a crash, not a blue screen. It's a restart. No memory.dmp. No minidump. In fact, Startup and Recovery > System failure is set up correctly. Write memory dump. Automatically restart is UNchecked. But it's not a crash. It's a random restart. Therefore, no memory dump. Event log has no clue as to why it's randomly restarting. Yes, I see the classic signature of restart events in the event log, but nothing jumps out at me like Aha! this is why it restarted. I thought it might be a power problem. So I put it on an APC battery backup and installed PowerChute. Well the battery backup isn't logging any power events, but still, down she goes! Still randomly restarting. Anyone have an idea how to go about troubleshooting this? Thanks in advance.      
Optiplex 5000 Restarts at random