N96 stuck with blue light on and Boox Reader on screen

[absconditus]

Hi,

I'm having trouble with my N96. When I turn it on, it remains stuck with the blue light on and with the screen showing Boox Reader. If I turn it off and connect the charger, the light first turns blue and then purple and the screen shows Boox Reader and it stays this way (with the purple light on and the screen showing Boox Reader) until I turn it off. Rebooting with fastboot leads to the same result (purple light on and Boox Reader on screen).

Thanks in advance for your help.