In Windows 10 or Windows 7, while using your PC, it may randomly restart with the following critical error message: System has rebooted without first clean shutdown. This error could be caused if the system unexpectedly stops responding, hangs, or loses power – Event ID 41 .
This post explains why your PC restarted with the critical version. The system rebooted without cleanly shutting down the first error message and how to fix it.
The critical error can occur in the following scenarios.
- The PC restarts and there is a BugCheckCode stop error in the event data.
- The PC is turned off by pressing and holding the power button.
- The computer restarts randomly and there is no stop error or any kind of error. The computer completely freezes and is unresponsive.
The above two circumstances will generally not give you any more trouble after the reboot. The error is simply telling you and informing you that the system has rebooted without cleanly shutting down first. Your Windows 10 or Windows 7 PC should work fine after the reboot.
The latter, however, is a serious problem where your PC randomly reboots without warning and may even stop responding or quit suddenly. Most likely it is due to a hardware problem. Possible causes of why it is happening are listed below.
Solution: The system has rebooted without shutting down cleanly first
One of the most common reasons why your PC randomly rebooted with the critical error is that you are overclocking your PC and the overclocking is now causing hardware problems.
Be it CPU, graphics card, or RAM memory overclocking, if they are configured incorrectly, overheating, or overvoltage, it could cause serious problems like damaging your hardware and leading to random reboots. If you are currently overclocking your hardware, try disabling it now and see if it fixes the problem.
Disabling overclock varies from how your hardware is overclocked in the first place. It can be an overclocking software in Windows or in the BIOS settings. Disable any overclocking settings and set the clock speed as the default to allow your PC to run at its standard speed.
Check your PC memory using a memory checker like Windows Memory Diagnostic and see if they work properly. Bad memory or misconfigured (overclocked) memory clock speed could cause your PC to randomly reboot with The system has rebooted without shutting down the first error.
To run the Windows memory diagnostic, follow the steps below.
- If you can start Windows 10 or 7, go to the start menu.
- Look for the Windows memory diagnostics and open it.
- Under Check your computer for memory problems, select Restart now and check for problems .
If you can’t even boot into Windows, you may need to use memtest86 and create a bootable USB from it. Then boot the USB to run memtest86 at startup.
Check the power supply
Check your power supply to make sure have enough power for all your PC hardware. If you have recently added some RAM, a new very powerful graphics card, additional hard drives, or any other hardware, this hardware may require more power than the power supply can provide.
If, in any case, your power supply is not powerful enough to support your PC, it will cause your PC to restart with the system The system has rebooted without turning off the error of first event ID 41 when it reaches its limit at any time when your PC is running.
Also, the power supply has a shelf life. You may want to check if your power supply is working properly now by putting in another power supply to test your PC.
PC hardware overheating
Besides overclocking, other reasons, like clogged dust and dirt In your CPU or cooling system, the broken chassis fan and faulty chassis airflow could cause your PC hardware to overheat. Thus, causing it to randomly reboot with the critical The system has rebooted without cleanly shutting down the first Event ID 41 error.
Check the temperature of your hardware using software such as Core Temp and GPU Temp , and see if they are operating at a safe temperature. If they overheat, you can try cleaning clogged dust on their chassis or sending your computer in for maintenance.
What else can you do
If none of the above works to resolve the issue and your computer continues to randomly reboot, most likely one of the hardware is starting to fail and need a replacement.
Alternatively, you can try resetting your BIOS settings to default. You may also want to try resetting Windows 10 to factory settings and see if the system has rebooted without shutting down the first clean issue would still occur when the system is running on its default settings.