My pc is crashing

[Werdi]

Hi everyone,I have a problem with my pc when I use the pc(it happens even with low demanding programs like surfing the internet) so suddenly my screen goes black and there is a game that brings it up always and the game is an old version of beam ng drive , I tried to run a stress test psu it ran without problems vram test too and ram test too my gpu is nVidia Quatro 5000 and 16gb ram 

I bought the pc from a company that repase pc and they say on their website that they test the pc thoroughly but that may not be true. And once it happened to me that after a crash I got a bluescreen that could not be fixed and I had to reinstall the system and twice it happened to me that after a reboot the mouse starts to blob on the log in screen which you can not get through because the mouse has about 3fps and does what it wants again helped until reinstall the system.

 

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