Windows 10: Getting blackout for a second and then kicked to lock screen happens often today might be...

Hi, it would be great if anyone could help me with this problem my laptop for the past 3 days has been acting pretty weird firstly I have an external monitor so with my laptop screen I got 2. On the first day, my laptop screen went blackout for a second and then my monitor also went blackout and then I got kicked to the lock screen. I noticed that every time my laptop fan starts to give me a sound that works hard like maybe opening a heavy graphics game or working with many apps opened at once the blackout and kick to lock screen starts happening. For the first 2 days it happens only like once

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