Desktop Failing To Connect To Home Network?

I recently moved into a new apartment, where our internet connection is shared with neighbors who are currently out of town on vacation. Most of my devices (Phone, Laptop, Girlfriend's laptop etc) will connect just fine to the passworded network we are meant to be on. My desktop however will not. It doesn't even see that it's an available wireless network.

This same computer was seeing/connecting to wireless networks as recently as this morning. It was also seeing another network for a little while with medium signal strength, which it now doesn't see either.

So far, I've restarted a couple of times, done the 'troubleshoot/repair' options on my wireless network icon, and verified that my wireless adapter is indeed on. I've also asked it to update drivers, but despite having no internet connection, it tells me it has the most current versions.

Normally, I would just reset the router as a first step, however because it's in my neighbors house, I don't have that option, however as I mentioned, this likely wouldn't make a difference, since several other devices, including the laptop I'm posting from now, are quite able to recognize and connect to the network in question.