(Redirected) Inspiron 4010 stuck on dell logo screen

Hi
I will need help if anyone can do for me.
I have dell inspiron 4010 laptop.
Suddenly, one day when i start is it is stuck on dell logo screen.
I tried-
- Hard reboot ( removing battery and hold power key)
- I tried removing cmos cell as well as HDD
Nothing is gonna help me out.
Also even I am F2 and F12 is not helping me out infact pressing these keys not moving from dell logo screen.

Kindly help.