My Samsung Nexus S is over a year old now. This morning I was doing a restart (just power down and back on) and it would not finish booting up. The word "Google" on the initial screen comes up, blinks and gets brighter and then just stays there. I did the reboot sequence (hold power button and up volume) and got it to reboot but then needed to shut it down again and know it will not turn on. Any help would be appreciated. I am running ICS 4.0.