I'm glad to here that you have solved the problem!

It might be worth buying a can of compressed air to clear our the cooling vans and vents.

Have you updated to the latest drivers and software from the ASUS website (including the ASUS System Control Interface v3)?Make sure to download the latest Armoury Crate - do not install Aura Sync (it is now integrated into Armoury Crate). Have you u...