Ps4 Only Sometimes Turns on

I have a ps4 pro that will only boot up sometimes. I push the power button and the blue light pulses until it shuts off. But if I keep trying it will eventually boot up and I won’t have any more issues until it powers off again. Anyone know how to fix it?Any help would be great!

I have a similar problem: power on, blue light…no white light but keeps flashing blue until i pull the cord. Then i replug the cord, and works. Sometimes for days, sometimes the next time the problem is back.
I’ve changed the PSU (for noise) but the problem is still here. I’ve also changed the HDD but to no avail. I think there is something in the boot process that sometimes fails, probably a faulty chip but I don’t know where to look. Any help?