DRIVER_IRQL_NOT_LESS_OR_EQUAL (d1) An attempt was made to access a pageable (or completely invalid) address at an interrupt request level (IRQL) that is too high. This is usually caused by drivers using improper addresses.   Windows Debugging Tools
Security Alert Error: "The name on the security certificate is invalid or does not match the name of the site." Issued to: *.btrll.com. Description: Ads displayed in Yahoo Mail have an invalid SSL certificate. Solution: Block the advertisements with an ad blocker.   Yahoo Help Community
Windows Audio Device Graph Isolation Helps sandbox audio in Windows from crashing the whole system if there is an audio issue. Can have high system resource usage. Fix by checking the "Disable all enhancements" box on the "Enhancements" tab of the playback device properties.   How-To Geek
Windows Explorer has stopped working "A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available." Error message for Windows Explorer.