OK the first thing to check is to make sure we are using the right password. Can you please try the instructions below to make sure?

1. Open your Internet browser (Internet Explorer, Safari, etc) and go to http://192.168.1.1/.
2. When prompted, leave the username blank and type admin for the password. These are the default values and may not work on your router. Please let me know if they do not.
3. When the router's configuration opens, click on the Wireless tab. Here you wireless network name will be displayed in the SSID box. Make sure this name matches the network you are trying to join.
4. Next click on the Wireless Security sub-tab. Here your password XXXXX be displayed in plain text. If you are using WEP, it will be listed in the Key #1 box. If you are using WPA, it will be listed in the Pre-Shared Key box (may also be called the Passphrase box).
5. Enter that password XXXXX your computer when prompted and you should get connected to your network.

If you verify that you are using the correct password XXXXX it still doesn't work, please let me know the version number of your WRT54G (should be on a sticker on the bottom of the unit). Some versions require a firmware update to work with Windows 7. Thanks!

Please try downloading the updated driver for your wireless card from here:

http://tiny.cc/qnfri

Click the link above and save the ZIP file to your desktop. Right click the file and choose Extract. Go into the folder it produces and double click the WLAN_Setup.exe file to begin the install.

Let me know if that doesn't help!

Yes that might be worth a shot. Here are the instructions in case you need them:

1. Hold down the Windows key on your keyboard and press R to bring up the Run window.
2. Type devmgmt.msc and click OK.
3. In the Device Manager, click the triangle next to Network Adapters.
4. Right click the Wireless Network Adapter and choose Uninstall. Click thru the warning and then reboot.
5. When the computer comes back up the adapter should automatically reinstall.

Thanks.

That's a different situation then (and it make more sense).

Please check the following:

1. Open Internet Explorer and wait for the Page Cannot Be Displayed Message.
2. Click on Tools -> Internet Options.
3. Click on the Connections tab.
4. Click the LAN Settings button.
5. Make sure all three checkboxes are CLEARED.
6. CLick OK and then restart Internet Explorer.

Let me know if that doesn't do it.

When you were plugged in via the lan cable..

You should have been able to get internet.. Maybe its a wireless / non wireless conflict.

Lets try this , turn off your wireless on the outcast computer that wont connect.

then..

try this..on the computer..

click start, all programs, accessories, then right click command prompt, and then click run as administrator..

then.. when the command prompt opens..

Type in

ipconfig /flushdns ( hit enter )

ipconfig /release ( hit enter )

netsh winsock reset ( hit enter )

netsh int ip reset resetlog.txt ( hit enter )

once you have run all these.. restart the computer.

Then, connect the computer via the ethernet cable..

and try to access the internet.. let me know exactly what happens.. Thanks

Ok.. but we can connect to the internet now via the ethernet..

So.. im thinking, we have one step left.. disabling tcp ipv6

follow the instructions in this link.. and you should be able to connect and use the wireless network

http://www.addictivetips.com/windows-tips/how-to-disable-ipv6-in-windows-7/

( this is a common procedure with some windows 7 computers to get them to work wirelessly)

Ok.. thanks..

one more question.. you are using security on the network?

I would like to try something.. I would like to reset the router and make it un secured.

just to test..

to do so.. look on the back of the router.. there is a small reset button




once its reset.. try to connect again..

let me know what happens.. Thanks.

Ok, on the computer that we disabled tcp ipv6

you didnt disable tcp ipv4 by mistake did you/?

lets do this.. lets system restore to the day before we did the changes. and then test again on the unsecure router.

to system restore

Click start, all programs, accessories, system tools, system restore..

We want to choose a restore point that was at least one day before the issues started..

Carry out the restore. the computer will restart, then let me know if that fixed the issue or not..

Ok..

I think the restore you mentioned is a full restore. Which yes.. is a good idea of course.. but a little extreme..

the system restore i mentioned, will only restore it to a few days ago.

Factory default disks will make it like brand new ( but remove everything personal, pictures, documents, etc in the process)

In truth, a factory restore is definitely better.. But we normally reserve that till later as you need to save your documents pictures, etc, first.

but if thats the route you want to go.. Theres no issue with that.

ok.. once you have the factory restore disks built..

save them..

Since its an acer.. and you want to factory restore it.. Lets use tehe built in method..

Shut the computer down, and then start it..

immediately start tapping alt and f10 at the same time..

This will load the acer factory restore program, Which is fast and quick..

When its restored.. you should be able to connect to to the network.. Let me know what happens after the restore.. And if it wont connect.. dont change any settings yet..

Just let me know exactly what happens.

You did say you just got this computer?

lets try one more thing.. and after these connecting suggestions.. if it doesnt work.. theres something wrong with the Pc..

first.. even though you factory restored. lets reload the wireless lan driver..

Here is the download link.

http://global-download.acer.com/GDFiles/Driver/Wireless%20LAN/Wireless%20LAN_Atheros_9.0.0.163_W7x86W7x64_A.zip?acerid=634078707544211987&Step1=Notebook&Step2=Aspire&Step3=Aspire%205251&OS=722&LC=en&BC=Acer&SC=PA_7

its direct from Acer..

Please download, and then , once downloaded.. run it to install it..


once installed, restart the computer.. and let me know if it will connect..