I was more interested in the heatsink next to the sata ports, silver label with asus. It's also possible the mosfets under the heatsink you moved are getting hot and causing problems. Confirm that the heatsink is still working by comparing the feel of temperature between the other heatsink between the cpu and connectors and the one you moved .
But as you won't do things that are being asked to confirm or disprove an idea this will go on for weeks.