laptop bootlooping with a system overheating error even after leaving in a cold room

[hexencoda]

laptop suddenly shutdown after i left it to charge and when starting it up i recieve a 90D system overheating error message. i immediately take the laptop into a colder room and left it to charge and cool down. after 30 mins i try to start the laptop and get the same message over and over again. hitting enter to bypass the message only shuts the computer down and the process repeats. i cant even load up a live usb. i felt the underside of the laptop only to find not a single warm spot that would indicate overheating. 

[Lil_Boy_Blue]

Hi

Is there a fan running?

Removing dust from cooling areas on your computer.

Over time, dust can collect in the cooling vents of your computer. Too much dust can block airflow, causing sensitive components to overheat and fail.

While wearing eye protection, use canned air or the end of a vacuum cleaner to remove dust from vents, preferably outdoors.

[hexencoda]

the fan runs perfectly and there is no dust in any of the vents. i clean the vents and the heatsink monthly. 

[Lil_Boy_Blue]

Could the thermal paste need renewing?

[hexencoda]

i havent had the laptop that long, it seems unlikely thats the problem.

[Lil_Boy_Blue]

Google thermal shutdown and the error code, there are answers out there.