Unfortunatelu, the process com.android.settings has stopped

Here is the situation I have an HTC ONE (M7) Here which does absolutely nothing but show this message...

It does not have usb debugging enabled and adb will not register it. I can however connect to it via fastboot....

Ive gotten as far as unlocking the bootloader... But now cannot seem to get any further as everything I have read uses ADB and i cannot get it to recognize ADB Device.

Basically from what i am reading.... Is flash custom recovery such as TWRP (Which i have downloaded) and i want to just reinstall stock rom etc. Not trying to root or anything here, just simply trying to reinstall factory software for HTC One (M7) - Telus Canada to hopefully resolve the issue.

Please any help is greatly appreciated I have been up now for nearly 20 Hours trying to get this done.

Exactly like this

S3 NEO GT 9300I "Process System stopped", camera and features doesn't work.

Hi

Just brought my S3 NEO a month ago. Rooted the phone in the first day using TWRP and ODIN.
Everything was running fine until yesterday. I was getting this error "Process System stopped" and a lot of apps such messenger and whatsapp were stuck.
My boot time increased too.

I've already tried to unroot, did a complete reset, flashed the stock ROM.
Right now the download mode indicates that the ROM is Samsung Official, and the KNOX is 0x0.

What should I try?