This morning, I began updating via pamac, then walked away to take a shower while that went through. About 20-30 minutes later, I return to my machine to find that the screen is off, and it won't "wake up" or respond to any input. So I force the machine to shutdown by holding down the power button. Upon rebooting, I can't boot at all via kernel 4.14, and I am only able to get to a terminal session using kernel 4.15. Here are some screenshots involving the boot problems, as well as the output of inxi -Fx (note: bluetooth had never been working, but the thing about the dell_smbios is new, and notable in that I'm using an Acer machine.)
I've tried updating via pacman in the terminal, but I don't seem to be able to get to the internet via ethernet or wifi, and as such it isn't working (I still tried because I thought maybe something was cached or something from earlier).
I haven't been able to find any way to connect to wifi via the terminal (everything I've found involves using "ifconfg," which is a package that I don't have in the KDE edition), so I feel like that might be a first step. I also have the live USB with me if there's anyway to update my system through the USB.
I am fairly inexperienced, so I'm sorry for whatever stupid thing I'm not doing or that I should have already tried.
Thanks in advanced for any help.