Dell Inspiron 17 5000 p26e completely dead

A friend of mine has this old laptop that died all of sudden some time ago, at the time I tried contacting Dell and they told me about the process of holding down the power button with battery and charger disconnected, and for a while that fixed it then one day it died completely and there was nothing I could do to bring it back.

Now with the quarantine I'm trying to see if I can fix it even if just for fun but nothing seems to work, this is what I've tried so far:

- holding down the power button with battery and AC disconnected
- cmos battery removal
- cmos and ram removal
- checked if power is getting inside the motherboard with a multimeter (and it does get power)

of course this is just a quarantine fun project so nothing urgent, but if some of you guys have any ideas I'd be very happy to hear them.

Thanks in advance.

 

Sounds like the mobo is shot.