Screen gone crazy...phone won't stay on. topic

Anyone else experience this? I replaced the screen (cracked) 2 years ago but this just started recently. It doesn't boot midst times and when it does is not for more than a few minutes then I get this. Not sure u if this a motherboard issue but any ideas would be greatly appreciated.. I love this phone and want to get it working again. I won't let it die like this
😱