I always run the code via SD Card, I tried running it through USB/Computer to see if the SD Card slot was screwed up - but the USB/Computer froze also. The computer did not go to sleep or anything, as I was watching it closely, and especially because the print froze just a few seconds after the print started - it had my full attention.

When using the USB/Computer, the coding that popped up in the log is as follows:

Read timed out.
Packet timed out!
Serial error:
Input/output error in writeArray

It kept repeating this, in between this message it would say "Retrying to connect in 10..9...8..7...6..etc." the USB never came disconnected from the computer, so it is something from the printer's side.

Overheating - maybe. This is my next guess - but all fans are working (motherboard, power supply, extruder). So something might be going wrong that those fans cannot cool down, which means a serious problem.