Google Accounts are usually disabled if the account's owner hasn't followed our policies. Google's policies include: Google Terms of Service. Other policies and terms for our products and services.

You can access the Account Recovery form from the password-assistance page by selecting "I don't know my password," entering your username, and clicking the link to verify your identity on the following page.

Here's how you do it. Go to http://accounts.google.com/signin/usernamerecovery and enter any email accounts or phone numbers that you've had for a while and which may have been used as recovery info. The “find your email” page can help you locate any forgotten Google accounts.