How to fix SYSTEM_THREAD_EXCEPTION_NOT_HANDLED
Jul 13, 2025 am 12:43 AMSYSTEM_THREAD_EXCEPTION_NOT_HANDLED blue screen error is usually caused by driver problems, hardware failures or system file corruption. The solutions are as follows: 1. Update or roll back the driver, especially graphics card, network card and motherboard drivers; 2. Check the memory and hard disk, use Windows memory diagnostic tools and chkdsk commands to troubleshoot problems; 3. Analyze the minidump logs and locate specific error modules through WinDbg; 4. Use sfc /scannow and DISM to repair the system files, and reset or reinstall the system if necessary. Following the steps to check it step by step can effectively solve the problem.
This blue screen error (SYSTEM_THREAD_EXCEPTION_NOT_HANDLED) usually occurs when a thread in Windows system throws an exception but is not handled correctly. It can be caused by driver problems, hardware failures, or system files corruption. Don’t panic when encountering this problem. Below are some common troubleshooting and repair methods.

Update or rollback the driver
In most cases, this error is caused by driver incompatibility or bugs, especially graphics cards, network cards and motherboard drivers.
- Go to the device manager to find the recently updated driver and try to fall back to the old version to see if there will be a blue screen.
- If the driver has not been updated, it is recommended to go to the official website to download the latest version to install it, especially graphics card drivers (such as NVIDIA, AMD, etc.), which have a great impact on system stability.
- Some third-party driver update tools can also be used to assist scanning, such as Driver Booster, but manual updates are recommended to avoid the introduction of unstable versions.
Check memory and hard disk
If the driver is fine, then you have to consider the hardware issues. The most common ones are poor memory stick contact or bad hard drive.

- It can be detected using Windows' own memory diagnostic tool (Windows Memory Diagnostic).
- Run the command prompt and enter
chkdsk /f /r
, then restart the computer and let the system check and fix the hard disk error. - If you are using dual channels or multiple memory, you can try to unplug and test one by one to rule out problems with a memory stick.
Check the specific reasons for minidump log location
Each time the blue screen generates a minidump file to record the stack information when an error occurs. By analyzing these files, you can more accurately determine which module is causing the problem.
- Open Task Manager → Start → Check the "Start Items" tab and confirm that the debugging tool (such as WinDbg) is installed.
- Use WinDbg to open the .dmp file in C:\Windows\Minidump and view the name of the error module.
- If you see module names like nvlddmkm.sys and atikmdag.sys, it is likely that it is a graphics card driver problem; if it is a driver of other third-party software, it may be a conflict with the software.
System repair or reinstallation as a last resort
If none of the above methods can solve the problem, then you have to consider system-level repair.

- First run the sfc /scannow and DISM tools to repair the system files.
- If it still doesn't work, you can try to enter the recovery environment to "reset this computer", keep the files or completely clear and reinstall the system.
Basically these common solutions. Although this error seems scary, as long as you check it step by step, the cause can be found in most cases. The key is to start with the driver first, then combine it with log analysis, and do not reinstall the system as soon as you start.
The above is the detailed content of How to fix SYSTEM_THREAD_EXCEPTION_NOT_HANDLED. For more information, please follow other related articles on the PHP Chinese website!

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