hello all- argh! i've searched via google w/o much luck on this. i have consistent occurrences of sudden shutdowns that require a 10-15 minute wait prior to successful reboot. thankfully it only happens if I attempt to play ANY games. this tells me it's GPU overheating. i've tried the rivatuner route and also GPU-Z. between incompatible hardware issues and complexity of parameters in rivatuner, no luck. i saw mention of running with the GPU outside the laptop. i'm almost crazy enough to find out how oh....here's some specs just in case: toshiba satellite a505/S6968 on Vista Home Premium 64-bit 4 GB RAM ATI Radeon HD 3200 GPU the whole laptop is raised off my desk by 2" and no obstruction to hot areas. do those fan-equipped laptop boards make a big enough difference, like if i just set my laptop on it even while on my desk? i'm a bit tempted to build a cooling system with an old PS fan, but if there's ANY way to send orders to the BIOS (Insyde H20) or other way to tell the GPU fan to turn on at 50 degrees less and stay on.....???? thanks for thoughts.....i'm not a frequent gamer but COD4 is truly cool to play and by the way- there WAS a time this shutdown wasn't happening at all. I think it showed up after I did a full restore of my original purchase date condition- the DVD's you make prior to any foolishness salsa4ever!