Wishgranter, thanks for the info.
Laptop model is Alienware M18x R1. Might look at upgrading GPUs to something like a GTX 765
or 2 of these…
http://www.ebay.com.au/itm/Top-Nvidia-GTX-770M-3GB-GDDR5-MXM-3-0b-Video-Card-for-DELL-ALIENWARE-M17-M18X-R1-/252512168188
What I find odd is that this machine has been working OK- yes it would fail on bigger projects or on higher detail but now fails almost every time- now I can’t even reconstruct data that I had successfully processed previously!? Also seems odd that the GPU is overheating (if that is the issue) so quickly now (within a minute or 2 of starting the reconstruction)- it’s not like it’s running for 30mins + before it fails.