Laser Printer does not initialize (All lights on or blinking)

I am sure everyone has faced problem of stuck Laser Printer.

The usual Symptoms are :

When powered on, All Lights Light on or All lights blink. The motor does not rotate at all.
Don't Panic! The Printer is Not dead! It's alive and kicking.

This is usually caused if 
1) Paper is jammed.
2) Obstruction in Paper Path.
3) Piece of paper stuck in fuser (from where the paper comes out).

The solutions are as below:
-> Turn off the printer.
-> Disconnect the power and data cables.
-> Take out the cartridge.
-> If sheet of paper is found, Pull out gently in the direction it would normally move.
-> Check for small pieces of paper remaining.
-> check for any other obstructions (Pieces of plastic, Pins, Paper Clips, Cockroaches etc.) and remove if found.
-> Re-insert cartridge and re-connect printer.
->It should work fine.