Asus laptop random shutdowns

Mar 21, 2018
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Hi. i got a asus R511La laptop that randomly just goes black screen and completely just shuts off.
I've tried to reinstall windows 10, still happens, Even in the bios the error occurs.

I have checked the temps, and they are all fine. The laptop is running fast and smoothly but it just happens randomly. It can run 10 mins and sometimes up to 40 min before it happens.

I have tried to replace the hard drive, memory, thermel paste and charger. But it still happens.

So i guess its the motherboard. Is it even possible to find a replacement? i can't find one