As much as we’d like them to, computers don’t always work as they should, and while it’s uncommon, they can sometimes stop working altogether and crash. This is what’s often called a Blue Screen of Death (formerly a Black Screen of Death), or BSOD, which is actually a mechanism in Windows 11 to help you diagnose problems with your system. A BSOD can also be referred to as a stop error or a bug check, which is when a critical process to the normal operation of Windows runs into a problem and forces the computer to restart.