My Acer Predator Helios 300 (PH315-53-72E9) keep shutting down

Pred_issues

I'm not able to find what is the issue with my laptop.
The following points will let you know the problem I'm facing right now:-

1) I'm unable to start my laptop with power button :- My laptop doesn't start with power button now but it starts with any other button on the keyboard .

2) Whenever I start my laptop it shuts down after a couple of seconds and restart. I'm able to enter into the bios but after a couple of seconds it shutdown on its own.

I've tried various trouble shooting methods:-

1) I've reseated the ram but it doesn't help.
2) Removed SSD and tried to start without it(I've a secondary HDD).
3) Removed battery and tried starting it after connecting the charger.
4) Cleared CMOS and Bios Reset.

Still nothing helped

I'm not sure but I think due to the humidity my keyboard might have got water damaged.

Please let me know your thoughts and anything else I can try.

JackE

Re-seat keyboard connector to the mainboard a few times to help clean its contacts just in case they are slightly dirty or corroded inside from humidity. Disconnect battery from mainboard when doing this.