My Compaq Presario CQ40 is 6 yrs old suddenly one evening this peculiar problem occured.Power on led remains for 3 secs and then switches off.Ethernet port leds also glow and then then switches off . Kindly advise what went wrong with my laptop. Battery checked and is ok.
I am having the similar problem with my Compaq Presario CQ40. I have already performed the hard reset but the same problem still occurs, it would restart after turning off though..but after 3 seconds it would turn off again.