M2 Cold Weather Issues
Okay. I realize that it may not be a problem with the M2 itself. But I thought I would start here.
My system will not start up if the temperature is cold. We're talking 0c and below (approx.). Once the interior and PC warm up enough, there is a perfect boot. This is consistently repeatable.
The power LED on one of my USB hubs flickers continuously during the time that ignition signal is applied (or 5 seconds after), no LED power-on on the other 2, and no power LED on the display (but it's on the 12V line, not 5V) until there is a proper power-up. Then all the LEDs come to life indicating that the PSU is firing up properly.
It was mentioned to me that it "might" be condensation forming in the case (MB and PS in same box) and after it dries up the system fires up. While I can believe condensation can do this, even the fans are not spinning up during this time so I don't know how long it would take for condensation to dry up enough with little-to-no air flow.
I'm wondering if the M2 is the issue, or if the MB might be giving the M2 startup issues. Or could one of the peripherals be causing it.
I currently do not have much in the way of tools/supplies (heat guns, freeze sprays) to properly troubleshoot to the level of bad solder joints or flaky capacitors.
Any help, ideas, or suggestions would be appreciated.
I found that one of the 3 powered USB hubs I used was preventing the system from boot while cold. On a nice crisp -12c morning I started up the car and started pulling USB off the back of the computer. As soon as I pulled the one hub it fired right up. I shut everything down, plugged everything in except that suspect hub, and again it fires up. I left everything for another 2 hours so that it was cold, and again it would fire right up.
I have managed to bypass this hub for now. Looks like a new one in my future.