laptop not turning on even after replacing cmos battery

my laptop is not turning on ...

1 . i removed the battery and drained the static electricity by

pressing power button for 30 seconds .

2. then i replaced the cmos battery ,still not turning on

3 .when i plug in the charger the leds are glowing ( red & white)charging and wifi indicators , but the system is not turned on when i press the power on button ...

4. and yes i have tried 2nd power adaptor also ,still not turning on ...

please give me the solution asap.....

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Remove battery and disconnect the AC power adapter. Remove and reinstall RAMs.

par

removed hardisk ,ram, and reinstalled it , but still no use

par

Sounds like a possible dead motherboard, is there a charging indicator light anywhere on the device?

par

Try checking the power button itself.

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