Laptop can't see my Wi-Fi network

Got a new router from my ISP last night. Everything was smooth at first, connected wirelessly to my laptop and just cruising. Today, though, things went south fast. The speed kept tanking until the whole connection just died on me.
Now my laptop won't even see the network, even though it connects to everything else without an issue.
I've already tried resetting the router, rebooting the laptop, reinstalling stuff, and updating drivers... nothing worked.

Also, I think the LAN port on my laptop is trashed. It’s super loose, keeps cutting out, and honestly, it's such a pain to even unplug it sometimes.

I'm losing my mind here and have no clue what to do next. Right now I'm just tethered through my Android and it's working fine.

Windows 7 64-bit, Dell Inspiron

Got it sorted for now. Just had to reboot my router a few times before it finally found the network and connected. We can lock this or just delete the thread. Thanks