Unable to connect selected network in windows 7

I am running a Internet point where I have ten computers. In that,I have installed some with Windows Xp, Some with Windows vista and one with Windows 7. I have two wireless networks on my Internet point. I use to connect in either of one.The computers that are powered by Windows xp and Window vista connecting with both the networks. But the computer with Windows 7 does not connecting with any one of these two. When I tried to connect with the first one, it says that the network won’t connect then I tried with the second one, which says computer cannot connect. Please tell me the proper solution to overcome this.

Related Windows Problems:

• Unable to connect selected network in windows 7
• Unable to connect to Windows Online after changing the Network on Windows XP
• Unable to connect the network in my Windows Vista as it is forcing to create a new network
• Not able to connect with Internet via Wireless Network on Windows 7
• My Windows PC automatically connects to the available network which available
• Windows 8 Release Preview unable to connect with XBOX Live
• Unable to access network 0x746133a5 Explorer application error
• Unable to connect Windows XP based Dell Inspiron Notebook with Wireless Network
• Getting a message 'Unable to Connect' when trying to connect Windows phone on Windows XP
• Unable to bind IP protocol stack to network adapter with Windows 7

If the windows 7 is not connecting with the networks then the problem is with WEP security.The network drives will not connect with the Windows 7 enabled PC if it using WEP security.You should change the security.Check the other machines setup of WPA2 security with AES encryption.Then do the same settings on your Windows 7 machine too.If you found the problem not solved,then you should format the machine with the Windows 7 DVD with genuine copy.

dear friend ,
In this problem may be your internet settings problem please check the settings.
->go to start menu .
->select control panel.
->now click the home networking settings.
->here you have to select which type network you use.
->that's it now definitely connect the internet in windows 7....thanks

here is my dear friend that you will be able to connect to the internet using your windows 7 pc.
First of all go to the control panel of your pc.then go to the network settings.
Then go to adapter settings .
Then you will see a option seeing wi fi .
Now use the settings that you are using in your window xp pcs.
Then save them and try to connect them.