Try using:holdem manager has detected that you have password complexity requirements enabled on this system. for this reason, setup will be using a stronger, more complex password for postgresql .
If that doesnt help:h0ld3mManag3r!
1. Go to C:\Program Files\PostgreSQL\8.x\data, move the the pg_hba file to your Desktop and open it with notepad.
2. Scroll to the bottom and change all md5 to trust. Save and close the file
3. Move the file back to the data folder
4. Restart the PostgreSQL service: Control Panel -> Administrative Tools -> Services
HM should accept any password now.