Hello,
Thank you for replying with the required information.
What is the make and model of your PC?
As you have mentioned that the system randomly restarts and no Stop error BugcheckCode is listed, or the computer is completely unresponsive, this scenario usually indicates a problem with the hardware. To help isolate the problem, I suggest you to refer the section **Scenario 3: The system randomly restarts and no Stop error BugcheckCode is listed, or the computer is completely unresponsive (hard hang)******from the following **** article on **Windows Kernel event ID 41 error "The system has rebooted without cleanly shutting down first" in Windows**and follow the steps mentioned in the section to isolate the cause of the issue.
If you see that the computer generates a Stop error that contains a BugcheckCode value that is not reported in an event ID 41, change the restart behavior for the computer. To do this, follow these steps:
1. Right-click My Computer, and then click Properties.
2. Click Advanced system settings.
3. Click the Advanced tab.
4. In the Startup and Recovery section, click Settings.
5. Click to clear the Automatically restartcheck box.
If the issue persists, I suggest you to follow the methods mentioned below:
Method 1: Perform clean boot.
Check if any third party application is causing this issue. Refer the article on **How to perform a clean boot in Windows**for steps to perform clean boot.
Note: A “clean boot” starts Windows with a minimal set of drivers and startup programs, so that you can determine whether a background program is interfering with your game or program.
Your computer may temporarily lose some functionality while in a clean boot environment, however that functionality will return when you reset the computer to start normally after you have finished your troubleshooting.
Method 2: Adjust PC to best performance.
To do that,
1. In the search box on the taskbar, type performance, then select Adjust the appearance and performance of Windows.
2. On the Visual Effects tab, select Adjust for best performance > Apply.
3. Restart your PC and see if that speeds up your PC.
Method 3: Check your hard disk for errors.
To do that,
- Double click on This PC icon.
- Right-click the hard disk drive that may be damaged.
- Click Properties, and then click the Tools tab.
- Click on the Check option.
- Now click on the Scan Drive option.
Regards,
Sandeep Kumar M
Microsoft Community – Moderator