I have a Lenovo Y480, which I love, but since I got it, it spontaneously shuts down (to protect it from overheating) whenever I use a program (usually some game) that utilizes the discrete Nvidia graphics card (a GeForce GT 640M LE). I suppose that this is not normal? Is there anyway to tell if this is a software/settings problem or a hardware problem (which hopefully is fixable)?
Here's a shot of my idle temps (while plugged in on a hard wood table). When I load a game that uses the Nvidia graphics, the Nvidia graphics card temp spikes to over 100 degrees Celsius over a couple minutes, at which point it automatically powers off.
The warranty expired last year, unfortunately. When I have time next weekend, I'll open it up and blow it out--considering that it was this way when it was brand new (I wish I'd pursued the issue then--I just assumed that I had some setting messed-up on it), I'm guessing that this probably won't fix the problem, though that would be awesome.
So, I just got my laptop back from the computer repair shop. It cost me $80 to have the fan cleaned out (it was fine) and thermal paste reapplied (it was a mess) to the CPU and Nvidia GPU heatsinks, anddd... No difference at all. As soon as a program begins loading that is one that kicks on the Nvidia GPU, the GPU temp goes over 100C and it shuts down automatically about 30-40 seconds after the program has loaded.
So, unless Lenovo would be willing to fix a hardware defect (I assume this is what's wrong?) on a laptop of theirs that is a year out of warranty (extended warranty--I even bought a one-year warranty extension, sigh), what are my options now?