Description:
If you can't login at the Full Disk Encryption screen, these steps should connect you to the wireless network. You should then be able to login.
Instructions:
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Click the gray wireless 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 log in with your new password.
Additional Resources:
Are you using an old password to sign in? See related article on how to sync domain password with Trend Micro.