the display on my pod hd300 is malfunctioning,what must I do?

When I start my pod hd300 it usualy shows the preset that i had it on from the last time I used it.

Now when I start it up it quickly shows the preset i was on then jumps to a display showing the calibration for bass mid treble etc..

Iv tried turning the knob to gp 2 dofferent presets bau it just jumps back to that same display.

Hope you can help.