@tjnihal suggestions are great to resolve the issue. I would like to add some additional troubleshooting steps that might help someone who will face this issue.
Check for Memory Issues: Your device memory error can also be a cause of this error “System_Thread_Exception_Not_Handled” with a failed of BrHostDrv.sys”. There is a preinstalled tool available by default on every Windows device. This tool can help you diagnose memory errors in your device. Type “Windows Memory Diagnostic” in the search and open the application; run the diagnostic by following the on-screen instruction.
Uninstall Recently Installed Software: check if you have recently installed any software on your device and try to uninstall it. Sometimes new software can corrupt your device setting, leading to this error. Uninstall the software and see if the issue persists.
Check for Malware: Anti-virus is the common cause of multiple BSOD errors. If you don’t have any anti-virus software on your device, you can install any free or trial software temporarily to check if your device has any virus or malware installed on your device.
Disable Overclocking: Some users overclock their device for certain purpose. If your device is overclocked try to reset it and see if the error is presist.
Perform a Clean Boot: If none of the suggestions worked to resolve this error System_Thread_Exception_Not_Handled” with a failed of BrHostDrv.sys on your Windows 10 device. I would suggest performing a clean boot. This will be the best option to see if any third-party software is causing this error. Temporarily disable all startup programs and non-Microsoft services to check if any third-party software is causing the error.
You may follow the below instruction
