I got a dv7-1245dx from a friend cause they(2 of them actually) didn't work. And when I turn them on both of them have the scroll and caps LEDs blinking every 2-3 sec constantly and one pf them the dvd drive constantly tries to spin up and read. I swapped out the CMOS battery from one to another,replaced the ram with working ram from a differ laptop and also did hard resets. Still nothing, Any suggestions?
check there power bricks...may be bad...low voltage. also check the bricks make sure the tips are not damaged or missing any rubber o-rings (dead short). also check the mb power pins...if there snapped or lose...dead short.