I hope I'm asking this in the right place, if not, feel free to brutally get rid of both me and my post, I'm just desperate at this point.
I own an Acer Aspire vn7-792g, I've had it for a few years. It's an excellent machine, but I've finally encountered a problem.
About three months ago, I started hearing a very quiet buzzing noise coming from the inside of the laptop, around the CD drive. Audio: https://old.vocaroo.com/i/s1GbCQkaMT8l
I assumed it's the fans, but since the temperatures seemed alright and the noise was very quiet, I ignored it. The buzzing appears after the laptop has been actively in use for some time, sometimes it's after 30 minutes of watching a video, sometimes after 3 hours of gaming, sometimes doesn't appear at all for a few days. What seems to be the thing that is making the noise appear the quickest and the most often, is watching a live-stream of any kind. However, disabling the most demanding app working at the moment (even if the CPU and GPU usage are at 2-6%) always immediately turned the noise off, as in instantly from 100% to 0%. However, once it appears the first time during the day, it's sure to return whenever going back to using any significant app for the rest of the day.
Unfortunately, after about a month, another noise appeared. Audio: https://vocaroo.com/jbrbWwraRfb (you can hear the original buzzing in the background, shows how much louder the cracking is). And if you let it go for a while, it gets faster and faster until it's like this: https://vocaroo.com/7hDAFDCd17d
This noise appears only after the original buzz has been present for some time, and it happens much less frequently. While the original buzz occurs on 20-25 days of the month, the loud cracking noise appears about 5 times in a month. Interestingly, while the cracking and the buzzing seem to be slowly getting from 0 to 100, as in very slowly, they both immediately, instantly stop once an app is shut down.
I still assumed it's a damaged fan or something fan-related, and gave my laptop to a professional, who cleaned up the cooling and checked the fans. I only asked for this service and not diagnosis, because the clean-up and fan inspection takes several hours, while diagnosis at least 3 days.
Anyway, the cooling system was cleaned, the fans inspected. They showed me the photos. The cooling was somewhat dusty, so it was cleaned up, but the fans were both in excellent condition. So they assembled it again.
Unfortunately, the noises persist.
I've tried many things that I've found online:
- SSD and HDD scans are all green
- Drivers are up to date
- Power supply and battery are both original
- Noises happen on both battery and plugged in power supply
- I couldn't disable EIST, C1E, or Turboboost in my BIOS, but I used a Throttlestop program to do it, yet the noises are still here
- Tried different power settings and created a new one
- I've monitored the temperatures, and this doesn't really seem to be connected with the temperatures, there are times when the noises appear when the temperatures are at lowest, other times the noises don't appear despite temperatures being higher
Nothing seems to bring any result whatsoever. I notice no other issue with the laptop, everything seems to be working alright. I don't really mind the original, quiet buzz, but the cracking noise is too loud to ignore.
If anyone has any ideas or suggestions, I would greatly appreciate it.
Thank you all for your attention.