So I turned off my computer normally one night like I always do and wake up the next morning to absolutely no post. I've tried the following:
- Reset CMOS memory via replacing battery and shorting it with the jumper
- Removed RAM and swapping modules/trying it out in different slots
- Replacing PSU with a confirmed working one
- Using a different screen and different cable
- Reapplied thermal paste and cleaned out my CPU, RAM slots and everything fully.