SupportAssist Remediation is a background service that Dell bundles on its Windows PCs to automate system recovery and repair tasks, and a recent update is reportedly causing BSOD loops.
If your iPhone isn't responding, and you're not able to power it off and then on again, you can force restart it to hopefully fix the issue.  Forcing a restart is different from a normal restart.
Microsoft has announced that it is getting rid of its Blue Screen error display to make way for a "Black Screen of Death." ...