My 4-year old Dell Inspiron N4010 (with Windows 7 Pro), for the past one year, has been starting very late, taking more than 30 minutes if I do not use it for 3-4 days. This time, two days ago I returned home after 16 days and turned on my machine, but Windows did not start at all. As advised by many, I took out the battery and did all those usual things, but nothing worked. The battery is fully charged and the AC adapter is working fine. When the machine is turned on, I see a blue or black screen and nothing beyond this. I have been trying for the past two days to revive the machine. Would appreciate if a suggestion is forwarded for getting the machine to life again. Thank you.