Question Laptop's power light comes on for a second and switches off in the same second

[Squabbie13]

The power light turns on for a second and in the same second turns off again. Cpu fan is spinning or anything. Any help?

 

[klwiley07]

Try checking all power supply connections,

 

[Squabbie13]

Try checking all power supply connections,

I have checked everything thing I saw but still nothing