See here for more useful information
User names and passwords
Forgotten your password
If you’ve forgotten your password, don’t worry. Go to Forgotten password page and enter your username. You’ll be asked one of your pre-set questions at random, which you must answer correctly before you can reset your password.
You’ll have to set the answers to the three questions before, you can reset a forgotten password. If you haven’t done so you’ll see an error message once you’ve entered your username. The message will say ‘Secret presented by the user is invalid.’If you haven’t set up 'Password Self Service' and still have problems logging in please contact the Learning Technology Helpdesk (Floor 2 Library) email@example.com Ext. 5100, who can reset your password for you.