Try just knock the device, I am not joking. When I slap it quite strong it comes back. Sometimes it is working for few days without problem, sometimes not. My problem is that I don't want to send it to Nokia by 3 reasons:
1. The problem is kinda floating - coming and passing, and I am not sure that nokia technician will find and fix it. To the best of my knowledge they will not send me the replacement device automatically like Dell does. Am I right?
2. I don't want be without the device for few weeks
3. I just don't believe in Nokia service anyhow. I think this is their weak point.