Macbook Pro 2018 crashes after hearing loud fan noise a few minutes after booting up
Yesterday (Saturday) I installed Big Sur in a Macbook Pro 15" 2018 laptop. Everything seemed to be fine. Later, during the update of Xcode and iMovie the fan started to sound loud and then the computer crashed. Today, after uninstalling Norton Security to install a new version the fan started to sound loud and then the laptop crashed again. At this moment the laptop crashes like a minute after boot up; first the loud fan noise and then the crash. How can I solve this?
MacBook Pro 15″, macOS 10.13