Chromebooks not finding any networks/WiFi stuck on Off?

Dan, thanks for your help! I’m positive there’s no infection on the Chromebooks having this issue. They’ve all been wiped and have had the Chrome OS reloaded, but the issue still persists. I’m also positive that the network equipment is working properly. I’d guess we have around 2,000+ devices on our network, and this issue is only happening on a handful of Chromebooks.

You did mention that it’s most likely the network card slots. I am also fairly certain it’s a hardware issue, but not certain if it’s the main board/slot,or if it’s the network card itself? I’m curious why you believe it’s the slot and not the card.

I think the problem may be the network card slots because you mentioned that you swapped out network cards before, only to have the loss of connectivity return later. If the problem persists even after you replaced the network cards, then either the slots are faulty or all the network cards you have tried are faulty. I think it's more likely the slots than all the different cards.

Also, the problem seems to be alleviated (at first) when you re-seat the cards or install new ones. There is something called "chip creep" that occurs when an integrated circuit works its way out of its socket over time. It is then alleviated by re-seating the loose chip. If the NIC socket doesn't have the means to keep the network card in place, "chip creep" can be a real possibility.

@baileyhecksel