I purchased an N45SF 2 days ago for playing Skyrim and experience the system auto-shutdown during gameplay (around 10 mins).

Wish I'd searched the forums before hand...duh

Support call logged so lets see what they say.

Yep running 218. No overclocks, NVIDIA 290.53, and performance power plan.

The game doesn't lag, get 30 fps in Skyrim, but after a while complete shutdown.

Hot air is blowing from the vent, not really powerful, but have no basis for comparison of what it should be anyway.

I mean 'poof' lights out. Yeah definately overheating, although... I have since removed Throttlestop (which I used to disable turbo) and been able to play Skyrim for 4 hours straight....

So seems solved..?

Same as before 290.53 beta

Only change I made since 1st post was to remove throttlestop, since then I've had no overheating issues. Doesn't make sense to me, but at least it's a good result.

I played Skyrim for 4 hours straight with these settings:

NVIDIA 3D:
Ambient Occlusion - Off
AF - 8x
AA Gamma - Off
AA - Application Controlled
AA Transparency - Off
CUDA - All
Max pre-frames - 3
Multi-Display - Single display performance mode
Power management - Prefer max performance
Texture filtering - Anisotropic Sample optimisation - off
Texture filtering - Negative LOD bias - clamp
Texture filtering - Quality - Quality
Texture filtering - Trilinear - Off
Threaded optimization - on
Vertical sync - Force off

Skyrim:
AA & AF off (since forced by Nvidia control panel)
Resolution 1920x1080 (hdmi output to 27" led monitor)
All settings high except shadows (medium), full view distance, reflect everything, FXAA on

Mods:
Skyboost
Skyrim HD 2K textures
Realistic Lighting
Realistic Water Textures
Realistic Lightning
Real Ice
Skyrim Performance Plus (Pine Needles, Rainfall, Snow, Aspen Leaves)
Better Females
Better Males
Enhanced Night Skyrim
Coverwomen
Calientes Female Body Mod (CBBE)

I get 30+ fps minimum

CPU/GPU running as stock with performance power setting in control panel.

I installed throttlestop yesterday (only had the laptop two days) but I was on an earlier BIOS. I didn't twig, but since updating the BIOS to 218, I started to get heat issues.

So seems for me at least that throttlestop and 218 BIOS are not good combo.