Question Power Led doesn't work but fan spin

[Sawsonu]

When power button is switched to ON , power led light doesn't light up but fan spin for few seconds and stops and continuously repeating the pattern of off and on.
The system doesn't boot and no bios screen appear.
Moniter is working.

 

[Lutfij]

Have you made sure all the connections from the PSU to the components are in order?

Full system's specs? List them like so:CPU:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:

We can move forward from there.

 

[Sawsonu]

Yes, everything thing is fit

 

[Sawsonu]

Have you made sure all the connections from the PSU to the components are in order?

Full system's specs? List them like so:CPU:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:

We can move forward from there.

Yes everything is fine

 

[Sawsonu]

Yes everything is fine

Motherboard ASUS p7H55-M LX
RAM DDR3 2GB 1333MHZ