Why can't I connect anything to my Router?

I can't connect anything to my Router via Wi-Fi. I have my computer connected to it via Ethernet cable, and the internet works that way, but I can't connect anything via Wi-Fi. All my devices (PS3, iPhone, Laptop, Computer) see the Router and find it on Wi-Fi-list but when I attempt to connect to the Router, it turns up as "Unable to connect" or "Connection failed" and so on.

I have rebooted the router several times, I have checked DHCP to be turned on, no mac filters, there's nothing that has been changed to the router settings. It isn't a problem with the router's hardware as that would mean that no devices would be able to find it on the Wi-Fi list; just to make it clear, the devices CAN find the router but they CAN'T connect to it.

Anyone have any idea what is wrong?

Your other devices maybe remember old password and they maybe using it to connect, or same ssid, same ip problem, channel problem might be, or firewall

  • Why can't my iPhone connect to my router? I have my iPhone 4S connected to my router but the connection i keep losing it i don't know how… Any help
  • Why can't my desktop connect to our Wi-Fi at home but does connect to moble hotspot? Suddenly my desktop won't connect to our Wi-Fi. All other devices such as laptops, phones and tablets connects just fine. I tried connecting it to my iphone's hotspot and it works. I tried to unistall and reinstall the wireless adapter but still won't work. I also tried to reboot the router and even tried to change the channel but still failed to make it work. Do you have any other way to make it work? I have windows 7 on my desktop.
  • What's the difference between a cheap router and a good router? Just wanted to know the difference between a cheap router and an expensive router, I know that is a very broad question, I'm just a bit confused on how a router works. Does it increase my Internet speed on multiple devices? I get 50Mb per second, Well at least that's what I pay for. I have a PS3 two iPhones and a tablet, as well as a desktop PC that is wireless. Can anyone recommend an excellent router under $150
  • Is there anything giving away free iPhones without doing anything? I was wondering if there was any site that's legit that gives you a free iphone and not the points sites cuz they only give very few points for each offers an I don't want to complete offers cuz they cost money and not those referral or sites that download apps and games or surveys I want something that gives you an iphone by just putting in info