Any way to hard reset a HDC A9100? I need to hard reset my HDC  A9100 any way I can. Please, does anyone know how?

To clarify: 
I need to overcome a forgotten screen lock, and the documentation provides no helpful information (it's here: http://www.swedishphones.com/uploads/7/4/6/3/7463877/hdc_a9100__manual.pdf)

A few attempts at the 'hold the volume buttons' etc while it powers on have been unsuccessful.

I do know the right username/pass combination for the "forgotten your..." screen, but it doesn't appear to work.

Does anyone have any recommendations?
Have you tried the standard Android hard reset? I heard this works for all Android phones.


turn it off (if you cannot shoot it down, remove the battery).
hold both volume-buttons and the home-button and then hold the  power button. about 5 seconds


use this at your own risk! You will lose all your installed data and get a clear reset to shipping settings, if it works.

there are some videos about it on youtube.