A fake "FBI lock" or ransomware screen prevents all actions.
A Kensington lock (cable lock) is physically blocking theft prevention.
If your computer is "blocked" by a software freeze where nothing moves, use these emergency shortcuts: how to unblock computer
(Advanced) Hold Command + S during boot. Type mount -uw / followed by rm /var/db/.AppleSetupDone . This allows you to create a new admin account upon restart. 3. Unblocking Restricted Content and Websites
You see a login screen, a "PC blocked" message, or a system freeze. A fake "FBI lock" or ransomware screen prevents all actions
If your computer is restricted by network filters (at school or work) or browser settings, use these methods: Unfreeze Your Computer: 20 Expert Solutions (2025) - HP
If your computer works, but you cannot access certain websites (like YouTube or Facebook) because they are blocked: Type mount -uw / followed by rm /var/db/
Here is a comprehensive guide on systems based on the most common scenarios. 1. Unfreezing a Non-Responsive Computer