Solution: DRIVER_IRQL_NOT_LESS_OR_EQUAL (btfilter.sys)

Here is the solution for those who get to run into this annoying restart loop, where you constantly get the BSOD DRIVER_IRQL_NOT_LESS_OR_EQUAL (btfilter.sys) and sometime get a System_Service_Exception.



This error, as you might have inferenced it is caused by your Bluetooth driver, corruption of the driver can be from several causes such as:

• Installation of a buggy driver
• Fiddling with the Bluetooth driver too frequently (esp when trying to get Bluetooth controllers to work using some unofficial methods)
• Power failure or abrupt interruption when updating the BT driver etc

The solution to this fault is very simple, find a way to make it to Safe mode. 

• Boot into safe mode
• Windows 10 and 8 users: 
• When system is starting hold down shift key, and select "See Advanced Repair Options".
• Select "Troubleshoot" 
• Select "Advanced Options".
• Select "Startup Settings".
• Follow the on-screen prompts
• Other Windows (7/Vista/ etc)
• When system is booting repeatedly tap F8 to bring up the menu
• select "Safe Mode"
• Uninstall the Bluetooth Driver:
• right click