Computer halps plz!

ok, so my laptop doesn't want to connect wireless-ly. I've done the whole "repair the connection" thing and that doesn't work. I've fiddled with the firewall and settings and that didn't work. It's been iffy for the last ~3days, being connected and then not...but you could always reconnect. The computer recognizes the router, says the device is functioning properly...so WTF? Grr, the point of having a laptop is to not be stuck :P

Halps?