Take a look at some of these possible solutions: https://www.quora.com/How-do-I-fix-the-process-android-process-acore-has-stopped-error Let me know if that helps or not.
you’ll want to hook it up to an external display and see if the issues persist. If they don’t, it’s a screen issue. If they do, likely it would be a GPU issue.
You can, but there is a painful amount of tiny pieces and brackets as you have to transfer every single part of the phone into the new housing. I would say it isn’t worth it.
Have you tried a new battery? A blinking orange light means improper voltage. If that’s not the issue, it’s likely you have a charge chip issue or similar.
You’re going to need to bring this to a data recovery professional, its the only way to recover the data safely. Unfortunately, they cost a large amount of money. I cannot stress how important it is to keep important data backed up on a separate drive for reasons like this. You never know when something can go wrong. Also, SSDs and flash storage are much more reliable so I recommend you use that from now on. Good luck to you, and I hope you get your data back.
It is likely you’re going to need a do a USB software update or software restore. Head to playstation’s website and try both with an external usb. They will have instructions from there. https://www.playstation.com/en-us/support/hardware/ps4/system-software/ If neither of them work, it’s likely that your hard drive has failed, and will need to get it replaced.
Before replacing the slot, you could try a trick to clean the card reader pins first. (1) get some isopropyl alcohol and thoroughly soak the contact points of any cartridge with a Q-tip. (2) put the cartridge in the slot and insert/eject the cartridge repeatedly for about 3 minutes. (3) try it again and see if that fixed it. hope this helps!