Help! I purchased a N810. When I went to install Skype...I was told to update. I checked the update feature on the unit. It said it was updated. I then checked the internet. I was instructed to flash the hard drive with the newest software...I did, successfully installed skype...but for some reason wanted to reflash the unit. I did that and now the unit does not power on. When I plug in the power to charge the little blue corner light doesn't come on. Help!