I really need some help or direction (aside from sending the camera in for repair). I own this Nikon D90 for several years. Yesterday, I have not been able to power on. I did the obvious things such as checking my batteries if they are fully charged; clean the battery compartment, the contacts, etc. but no signs of life. I do not use wired remote, or GPS. I search the existing forum for leads but with no success. If you have any experience relating to this problem, I would really appreciate some help. Thank you in advance. Hsu94583