If you updated your password for your computer recently and you are having issues logging in at the Full Disk Encryption login please follow these instructions:
1.Click the gray wireless icon icon in the top middle of your screen before logging in.
2. Connect to your home wireless.
3. After you are connected the wireless icon should turn blue.
4. Click 'Menu' in the top left, then 'Computer', and 'Network Information'
5. Click 'Re-connect' this should turn the computer icon on the top middle blue as well, and should allow you to login with your new password.
Are you using an old password to sign in? Follow these instructions to sync so it's your current one! How to sync domain password with Trend Micro