lenovo B480 not switching on

[Avinash13]

My lenovo B480 is not turning on. After pressing the power button the keyboard light turns on for second and it goes off. And a sound comes out for 3 times, but in the power button the light remains On. Plz help me. I am very tensionised.

 

[zer0c007]

That sound is probably a bios beep code, there different types, on mine I believe 3 beeps indicates video problem which means graphics card error. This beep code on mine sound off if the card has failed , not inserted correctly into the pcie or interfacing with ram if the card uses ram when needed. Therefore check if your ram is seated correctly especially if it has taken a fall or knock. Check for dust as it may caused overheating resulting in breaks in solder on motherboard which will require the motherboard to seen be a technician for reflowing?