It's almost always running just for normal office usage (Office 365, Gmail, Chrome,etc). Sounds like only fan spinning. My PC is out of warranty just 3 months ago . I tried to contact your service and it told me that it costs 110e just for sending it to your service, not to mention the time I will have to wait and the repair costs itself. I really doubt if it's worth the time, energy and money to repair it.
What would you advise me to do? Just dump it to trash after only 2.5 years for a notebook of 1000 euros? I really regret that I purchased Zenbook, to be honest.