PC crash and restart while playing

I agree with mcsupersport that the game doesn't cause hardware failure, but it can trigger an existing underlying problem. If these are indeed two entirely different PCs, that's just extremely bad luck. Did you monitor temperatures while playing?

You said these PCs are pre-assembled, but are these brand PCs or custom PCs pre-assembled by the store? I've had bad experiences with custom PCs that were either poorly smashed together or didn't fully survive the journey from the store to my home.