How to fix my ThinkPad that's stuck on 'You're 100% there'?

To get your laptop out of that stuck screen, you'll need to interrupt the startup process three times. Start it up, and as soon as you see the Lenovo logo or the spinning dots, hold down the power button until it turns off. Do this three times. On the fourth boot, you should see 'Preparing Automatic Repair,' then 'Diagnosing your PC.' Once you're at the Recovery screen, choose 'Advanced options,' then 'Troubleshoot,' and from there, go to 'Advanced options' again. Start with 'Startup Repair' and let Windows try to fix itself. If that doesn't work, go back and select 'System Restore.' If that also fails, pick 'Uninstall Updates' and finally 'Uninstall latest quality update.' If you're still stuck, select 'Command Prompt,' and enter 'sfc /scannow' to see if that helps.

It sounds frustrating! If you've interrupted the startup multiple times but nothing else shows up, try to ensure you're holding the power button long enough each time. For the Command Prompt, once you're in the recovery options, you should see 'Troubleshoot' and then 'Advanced options' where you can find it. If you still can't get there after trying these steps, it might be a more serious issue. Don't hesitate to get help from someone who is tech-savvy.