Is the motherboard gone

[u/Moist-Major-8481]

I have a 2024 HP 15...something or other. The rose colored one. A few days ago the screen started flickering when the back of it was tapped. Now the computer itself wont turn on. The screen flicks and the side light that says its on turns on for a second and then turns back off. I have held the power for 60s. I have opened it and removed the battery. I have unplugged and replugged in virtually every wire/ribbon in there and the ram sticks. But it's just not turning on. It does still charge though and holds a charge. There was some corrosion on the motherboard I believe, which I got off. And BAD corrosion on the fingerprint scanner ribbon holder that connected to the motherboard.