yes my laptop just shuts down.
I'm running the latest bios, and the fans are just doing their job I guess. Temperature is rising and ofcourse overheating, dont have any monitoring software.

The only abnormal use for a laptop would be throwing it in the water while connected to the AC power.
any other use is normal, so even playing games but also pegging out all the CPU's with heavy programs, which i have.

I am not playing games on this one, but rather rendering on all CPU's or on the CUDA cores.
Both times the laptop overheated and just shuts down.

Yes, this might stress the CPU a lot and leads to higher temperature…
I guess you are using Toshiba graphic card driver… do you?

This is important since the Toshiba GPU driver supports an overheating protection which slow down the GPU if critical temp level would be reached…

At the other hand I would recommend cleaning the fans (of course only if they are jammed)

Dust and debris could affect air circulation and at the end the temperature would be too high…

Otherwise the service should check the notebook since this is not a usual notebook behavior…

Hi quizzy,
I have the exact same issue and it's been a problem since day 1. Did you ever figure out a solution to the overheating on the toshiba A665? Myguess is it's because the air vents under the cpu area is not punched out. How can you cool down the cpu without air flow???
Thanks for your help. This has been driving me nuts!
Mike