How to turn off Netgear r6300 router wireless internet?

I have a Netgear r6300 router and I'm currently living with my roommate. We both have Xbox 360's except his is wired and mine is wireless. I'm tech savvy so feel free to get technical in the responses. Basically what is happening is he has made it so only his wired connection works and my wireless connection won't. I have tried connecting my laptop wirelessly as well and it won't connect, but the second I plug it into the r6300 with an ethernet cable it immediately begins working.

Just some further details: I have the router login and there aren't any settings I can see that would alter me not being able to connect. The SSID is still broadcasting, but it won't allow me to connect to it at all unless it's wired (it won't even let me connect wirelessly to configure to router). My roommate some how used his iPhone 4S to set it to this state while we were playing. We both have the router login. So I've decided to turn to Yahoo. Time to get a new roommate right?

Long story short: Can connect and access the internet with wired connection. Can't even connect to SSID on wireless connection right now.

Please help and feel free to ask questions in your responses if I'm not providing enough detail.

Added (1). @NERV Agent: The Wi-Fi password in the settings hasn't been changed so I'm sure we're using the correct one. Thanks.

@Hayden: I have tried this on multiple computers and a couple of xbox 360s so the wireless adapters aren't bad (plus, they connect to my phone on mobile hotspot). I know I can reset it, but I'd like to know how to solve this just in case it happens in the future.

Do you honstely think i'm spoiled?

I have a macbook pro, xbox 360 ( don't use) , iphone 4s ( i dropped in water), ipod touch 4th ( broken) , ipad mini (brother uses) an hdtv ( don't use)

IPhone 4S Wi-Fi not working at all?

I've just updated to the ios7.04 and since that day my Wi-Fi will not work.

The button to turn the Wi-Fi on is greyed out and will NOT let me turn it on!

I've tried everything, resetting my network, turning phone off, it's just broke anyone in the same boat?

IPhone 4S Wi-Fi not working - all greyed out?

Please help my phone is utter useless as I use it for work etc and the Wi-Fi is just not working!

I updated to the ios7.04 and since then the Wi-Fi button is greyed out I've tried everything I can think of?!

Please someone help x

Can I swap my iPhone 5c out for a 5s in store?

Okay so this christmas, My mother has confirmed I'm getting a blue iPhone 5c…

If I was not to open the box or interfere with anything, is it possible to go into an apple store and swap it out for a 5s with money on top?

P.s It has already been bought and wrapped up so I wouldn't make the 14 day return time, its also contracted with EE.

Iphone 5c asking for password?

Just got the iphone 5c thanks to a GREAT deal with Sprint (my first iphone and I LOVE it!). One thing that annoys me, however, is that anytime I want to download something from the app store, it requires me to enter my password. Every. Single. Time. Quite annoying if I just downloaded something 30 seconds ago. I can't seem to disable it, though. Anyone have an idea?

How to change my router to static IP?

(A lot of questions lie ahead)

I have a Kodak ESP C315 and just purchased a linksys EA 3500. Now that I have it all set up my printer will connect to the Wi-Fi SOMETIMES but later disconnect itself and be unable to connect. After doing some research I've found that this is because I have a dynamic IP but would like to change it to static IP. By changing my router over to static IP will I have to manually enter every device the first time before being able to use it?

I run a shop and keep the Wi-Fi for employees only so having to manually add new devices wouldn't be an issue. But by changing my router over to static IP, will this complicate or slow the connection whatsoever? Or, is the only noticeable difference the administration of devices?

Would it be easiest to change it over to a static IP?
To change to static IP I need the IP address, Subnet Mask, Default Gateway and Domain Name Server of (I think) the router. When I go to run and type in cmd then enter ipconfig /all it gives me all that information for my laptop right? I'm getting:
IP Address: 192.168.1.142
Subnet Mask: 255.255.255.0
Default Gateway: 192.168.1.1
DNS: 192.168.1.1

These are obviously the generic addresses for the router, so to change it over to static IP would I need all that information for my modem?

I apologize for the excess of questions but I'm someone who likes to know all the details to be prepared for whatever might come later (like problems adding or connecting a device).

Lastly, I've noticed after connecting a multiple devices during the busy hours (4 employees at a time, and around 10 total devices) some employees can't connect their iphones/macbooks. Does this have anything to do with the dynamic IP? Or, is there a setting to allow more connections at once?

Thank you for taking the time to read this and answer. It's greatly appreciated.