i7 4720HQ fan noises?

[Spicynoodle]

Basically, I decided to clean my vents out with a compressed air duster (smart, right?) Well, i have an ASUS ROG GL551-GS71 laptop. So i decided to not just directly spray the air inside the vents, but on the side. After that, i started noticing a coil whine -- not where the actual vents are in the laptop, but near the CPU area. You can hear a clicking noise next to one of the fans, but if you listen to the vent where the fan is... its non existent. This clicking noise is different from the coil whine... and i'm almost certain it has to do with a cooler of some sort. So basically, i have 2 problems: coil whine and a clicking issue.

Do you guys know what to do or how to fix this? I'm frankly frustrated and don't know what to do. :/

 

[CountMike]

Is it running at all ? You should be able to see if fan is turning and how fast with a program like HW Info https://www.hwinfo.com/download.php Coil whine maybe is coming from a stuck fan as well as clicking if it's just trying to start.

 

[Spicynoodle]

Its running, but for some reason -- the sound has died down. The coil whine is still there, but you have to press your ears up against the laptop keyboard to properly hear it. I don't even understand how the cooler could even have a whine like that. It sound digital.

 

[CountMike]

Well, fans are brushless DC motors with coils and electronics in it that transform DC into high frequency multiphase AC.