What to do first
Check whether Windows shows a blue screen or error, disable Fast Startup temporarily for diagnosis, and update drivers before changing BIOS settings.
Power and shutdown
PC Restarts Instead of Shutting Down
A restart instead of shutdown may be caused by Fast Startup, a crash during power-off, a driver, or a firmware and power-management issue.
Quick answer
Start with the reversible checks
Why it happens
Why this problem appears
Windows may restart when a shutdown path crashes, when firmware interprets a power event differently, or when hybrid shutdown and drivers conflict.
Step by step
Safe troubleshooting order
- Watch for a brief blue screen or error before the restart and check Reliability Monitor afterward.
- Install pending Windows updates and update chipset and power-management drivers.
- Temporarily turn off Fast Startup in Power Options to test whether hybrid shutdown is involved.
- Disconnect docks and USB devices and test a normal shutdown.
- Leave BIOS or firmware changes until you have a model-specific procedure and a recovery plan.
Safety note
Know when to stop
Protect important files before resets, driver removal, account changes, or recovery operations. If the symptom points to hardware, repeated software changes can make diagnosis harder.
FAQ
Why does my PC restart instead of turning off?
A shutdown crash, Fast Startup conflict, driver problem, or firmware power event can send the machine back through the boot path.
Should I change BIOS power settings first?
No. Start with Windows updates, drivers, Fast Startup, and connected devices. BIOS changes should be model-specific and reversible.