Windows 11 machines that should shut down but instead loop into a restart are a maddening — yet fixable — class of problems, and the simplest remedies usually live in your power configuration and a few targeted system checks.
Background
Windows 11 introduced incremental changes to startup...
auto restart
bios/uefi
bsod
clean boot
device manager
dism
fast startup
network adapter
nic power management
power management
powercfg
restart loop
safe mode
sfc
shutdown
startupandrecovery
troubleshooting
wake-on-lan
windows 11