Why won't my laptop detect my Wireless router?

When I got my laptop, it had Windows 8 on it, and well, everyone hates it... so needless to say, I downgraded [or upgraded?] to Windows 7. After installing Windows 7, and installing all drivers, my laptop will not detect ANY wireless connections, and I know there are a few around my house. I do have my own, 20 feet away from where I keep my laptop [or less]. Still won't read it. I have 2 desktop computers connected to the network via a ethernet cable, and 2 mobile devices connected wirelessly. The wifi worked on my laptop just fine in Windows 8, but not anymore since my downgrade [upgrade?].

When I go into device manager, It says the device is working properly. No yellow exclamation mark. I've tried installing the drivers multiple times. Both via Device Manager or Manually.

Any thoughts?