Hi Milkshake1997,
I would suggest just using the audio from your iPhone as you film to start with, then investing in a more adequate microphone as you confirm you want to become more serious about filmmaking.
-Josh
Could this be a beep code that your referring to? Check out this article.
Try a hard reset.
1). Power off laptop
2). Remove Battery & Power Pack
3). Hold power button for 30seconds
4). Place battery back in and connect power pack
5). Power on computer
I would assume from the information...
An interim solution could be using a cooling fan. If a laptop is running hot, or any device for this matter-Do not continue to use it on your lap. This could be harmful to yourself and may cause the laptop permanent damage as it will not be receiving airflow.
if it is seriously that bad I would...
Are you wanting to stop the mobile from accessing the internet from the mobile or are you wanting to stop the mobile connecting to a WiFi hotspot that you controll?
Are we able to help you find the MAC Address possibly? Phone Model?