on ac power led is on and battery light is on and blinking yellow but my laptop does not comes on

[nslondone]

on ac power led is on and battery light is on also and blinks yellow but laptop cant Côme on

 

[mortemas]

Try removing the battery and starting the laptop with just the power supply.

 

[Marcuss_95]

This means faulty hardware, your laptop won't boot because booting with faulty hardware can cause and will lead to more damages. I recommend replacing that old motherboard or buy a new laptop.