What do i do about this noise

Cyancreeper420

I've had my laptop for a good few years and a few months back my fans started to make a clicking noise as if it were scraping or catching on something and on high rpm (max fan speed setting on predator sense) it literally sounded like you were trying to lawn mower a carpet. It probably dosent help that a few weeks after starting to use the laptop I ran it on max predator sense fan speed at all times (this has led to my family thinking I've destroyed the bearings in the fans from continuous usage. and I do game on it for obnoxious lengths of time a day). This is because it overheated while playing overwatch with manual fan settings and the only way I knew to change fan speed was slap it to max and obviously they save and I though "oh well at least it won't overheat". I'll leave a link below to a separate you tube channel I own that isn't my main one so that you can hear the noise (which isn't even the worst of it because the fans were not spinning at full speed) and give me advice on what to do about it but please bear in mind I'm petrified about opening the laptop in case I brake something important.like the whole mother board.
Before coming to post this I was considering taking the pc to Currys pc world to get it checked out there and see if they could fix it.
To anyone that can help me out thanks in advance. And another thing viewable in the video is that predator sense says the fan rpm is 0 but the fans are still on and spinning evidently by the noise

Commodore_1995#

Can you inform the model of the notebook? example an515-51-75kz. Also, can you record a video of the noise and post it on youtube?

Cyancreeper420

Predator helios 300 and the model is N17C3. Here's a link to the short vid I made. Ignore the rest of the channel. https://youtu.be/8uTKGD1CIaI

Commodore_1995#

Is your model the ph317-51 or a517-51? Is your notebook still under warranty? Have you taken apart the notebook to check the fans?

https://www.youtube.com/watch?v=W500OWPhaRA

Cyancreeper420

It's the ph371-51 And no the laptop is no longer under warranty (don't know if it even had warranty in the first place) haven't taken the laptop apart because I'm too scared to in case I break something 

xapim

Cyancreeper420 well if its out of warranty you should disassemble it and see whats going on you just need a good mobile phone disassembling kit and pry tools its the easiest laptops to disassemble could be just a cable that its touching the fans or even a damaged fan/blade in which case you would have to get a replacement also your model should be ph317-51 (H300 17") correct because the one you stated does not exist

Warranty in UK its valid for only 1 year ITW unless you buy extended warranty before it expires also if your warranty already expired they will charge you to check it no matter where you go better just check it yourself 

Cyancreeper420

What would you recommend to pry the casing open because I don't have any fancy tools to do so

Cyancreeper420

And yes that is my model. I just didn't know where to find it on the device. My bad😀

Commodore_1995#

You will need a kit of phillips keys for notebooks and a spatula:

Cyancreeper420

Last night I opened up the laptop. Me and my dad managed to get the case off without any special tools. Just a normal screw driver and a long thumbnail. We looked at the fans and blew into them to clean them but we noticed a fan fin missing (bear in mind there the metal aero blade ones) which has led us to believe that the noise could be the fan wobbling  up and down due to the unbalanced fan  and clipping the case that surrounds it. That's only a theory though. After we removed the fan unit from the motherboard we couldn't find anything but dust. We cleaned it up and put the unit back on the board. However we didn't 're apply thermal paste so until I do that I'm not using it.

If it's even safe to use in the circumstances.what would you recommend from here. And I already scrapped the idea  go to Currys and go to a small local pc fix business. My friend said to replace the fans completely however me and my dad didn't see how to because the fans seem to be one unit welded together whilst sellers show 1 fan as a stand alone. 
Can someone leave a link below to show me how to split them without destroying them please and if it becomes too expensive I'll have to go to that small pc business. I'll keep you posted on what happens  

Commodore_1995#

Can you send a picture of the damaged fans? If a fin has been damaged, I suggest that you change the fans, see:

https://www.youtube.com/watch?v=Ph2ibK79zd8
https://www.youtube.com/watch?v=aPUCYUiGWZQ&t=28s

Also, check if the damaged fin is somewhere near the motherboard. As it comes into contact with the motherboard, it can cause some short circuit.

Cyancreeper420

I would send a damage pic but it's that small my camera won't notice it without turning into a giant blur. Sorry. Also there was no fin inside the machine which I'm guessing it fell out upon removal of the case and we didnt notice

Commodore_1995#

Even so, I suggest that you if any piece of the fin is in contact with the motherboard. Also, I would try to replace the defective fan.

xapim

Cyancreeper420 definitely replace the fan(s) bare in mind you cant buy aeroblade fans they are acer proprietary they only provide them under warranty the only ones you can buy outside acer are the plastic delta or through an acer parts partner if youre still on warranty send it directly to acer do not bother with currys 

Cyancreeper420

I've found out a way to get the exact same fans as what are in the pc that isn't acer and I won't say because I don't wanna put acer out of business. And Thank you for saying to replace them. And for the record we scrapped going to Currys a long time ago cause we found how expensive it would be

Cyancreeper420

Don't ask how to find them please. Because acer will most likely kill me if i tell you how to get it (for any1 that can't tell this is extreme exaggeration. I'll most likely not even suffer a consequence. But still that's not the point)