I am having an issue when my laptop is in tablet or presentation mode. If the fan ever kicks on in either of these modes, I get a audible clicking noise from right about where the fan vent is. It's as if the fan is hitting something in the enclosure. The exact model of my laptop is 13-ac023dx. I love tablet mode so far, but it is a major issue that anything intense enough to need the fan causes this awful click noise. Aside from just being annoying, it is concerning as I paid 1400 dollars for the computer and it seems to have a hardware issue. My BIOS has been updated and the issue remains. I'm out of possible solutions and would like some input as to whether or not I should take this up with HP to get it fixed or possibly replaced.
Welcome to the HP Forums. I would be happy to help you with your HP Spectre x360 notebook. I understand that you are getting clocking noise from fan and you have already done some preliminary troubleshooting.
Don't worry though as I have a few steps to determine the issue and find a solution as well,
Keep notebook air vents clear and clean
Increase the efficiency of the notebook to reduce heat
Use Windows Task Manager to identify corrupt processes
Select power saves settings to shut off your computer when it is not in use