ps3 turns off after 40 seconds

hi

i've a ps3 that whenever a try to turn it on the green light goes on that 40 seconds the ps3 turns off, and there is nothing on the screen , any thoughts what it migth be?
how do i solve it?

thanks

what light come on when you turn it on to when it goes off is there a yellow light or flashing red light if so this could be YLOD in which case it will need new thermal paste and a clean there are tutorials and videos around to show you how.

when i turn it on the normal green light shows up then it goes off and the red light turns on , no yellow nor flashing lights

i've been able to acess recovery menu

i'm trying the update option (ofw 3.55) but it stays "checking , please wait" forever and the lights of the usb stick doens't light up (like it's not acessing the usb stick)

ps: i don't have any blu-ray drive attached

edit: just had to wait a little longer know i've a problem at 72% 8002F14E how can i solve it?

edit : fixed thread can be closed