amb57 0 Newbie Poster

I have Toshiba Qosmio G25 ,I had issue with turning on the laptop for sometime but I manage to unplug the cable remove the Ac adapter then push the power switch for 10 second and put battery back and connect the Ac adapter and turn the computer on. Today when I turn on the laptop it shutdown right after. The blue LED power indicator light is on when is connected to Ac adapter, and when I disconnect the Ac adapter and use the battery, no lights are on, only when I turn on the computer battery indicator LED will com on for a second and goes off, and with either of these two attempt seems like I can not turn the laptop on, I forgot to say that year ago I changed both Fans Myself since I had overheating problem, and after that I did not have any problem with this laptop until today.
What would be the problem, Can someone help me out, I am new here.
Thanks again
Take Care