Can't render any more

Something is causing my Poser to crash my PC.

Re-installed all software/drivers and it's still crashing.

The crash seems to be a timer, it crashes after around 2 min after i pressed "render"

so i can render a whole scene without crashing if i reduce the settings to something between: max render settings but 700x500 resolution or 2700x1800 but with no render settings.

So i wont bother untll its stopped crashing.