How long does it take for tails to boot up?
If the computer starts on Tails, the Boot Loader appears and Tails starts automatically after 4 seconds.
What to do if your PC is stuck on booting screen?
If your Laptop stuck at loading screen (circles spin but no logo), follow steps below to fix. Shut down your laptop > boot into system recovery (press f11 repeatedly as soon as you press the power button) > then, select "Troubleshoot"> "Advanced options"> "System Restore". Then, follow on-screen instructions to finish.