Dell Inspiron N5010 8 beeps on start up

Hi,

I have a Dell Inspiron N5010 and it was fallen down from my bed, since then it stopped working. Whenever I try to power it up it beeps 8 times in series.

I have gone through various discussions in dell community regarding this and have done the following tests.

LCD test (D + power-on)  : This test runs fine, able to see solid colors and on restart it again gives 8 beeps

Fn + Power-on : This doesn't work. As I could see in the discussions, this should run a diagnosis test. But in my case nothing happens, 8 beeps continues.

Few posts suggested to remove the CMOS battery for a while and place it again. That too didn't work.

Reconnected the LCD cable and tries, problem still exists.

Can anyone suggest me what might have went wrong?

Thanks in Advance.