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networking - Windows XP Internet Issue


I'm trying to fix a computer running XP for a friend, and it is being a pain. It is on the same wifi as this Mac I'm using to type this.


It says it is connected and the signal strength is excellant. It is connecting through Windows, no 3rd party software.


If I use Chrome or IE and get to the Connections tab of the internet settings, underneath LAN settings, Use a proxy server was checked, not sure why, but I unchecked it and checked automatically detect settings, and restarted, but to no avail.


ipconfig yields:


IP: 192.168.1.11
Sub Mask: 255.255.255.0
Default Gate: 192.168.1.1

ipconfig /release zeros out, as expected


ipconfig /renew says:


An error occurred while renewing interface Wireless Network Connection : 
unable to contact your DHCP server. Request has timed out. 
No operation can be performed on Local Area Connection 
while it has its media disconnected.

I tried using winsockfix.exe, and netsh, with restarts, but to no avail.


Network Connections lists:


Wireless Network Connection (Connected, firewalled)
Local Area Connection (Network cable unplugged)
1394 Connection (Disabled, firewalled)

Edit: Also, when Chrome starts up it says "Resolving Proxy", which I thought I had disabled...


Edit 2: It works just fine on a wired ethernet connection.


Edit 3: I tried throwing in static info, but no luck.



Answer



I've experienced this problem many times at client sites (and once at home) where the wireless doesn't work despite showing a "connected" state, but the wired ethernet does work. Try these steps (if they don't work, then you may need to replace the wireless router; hopefully it's still under warranty if that's the case):




  • Power cycle the wireless router (un-plug it for 10 seconds), then check its public IP settings (to make sure it's getting a public IP address, mask, and gateway that are all working correctly)




  • Upgrade the wireless router's firmware (this sometimes resolves connectivity issues)




  • Try using a different channel (this will cause your wireless router and NICs to use a different frequency -- if your neighbours are utilizing a lot of wireless bandwidth, then using a different frequency should yield better performance for you because you won't then have to compete with them for bandwidth); you can use Network Stumbler (free and intended to be open source) to see which frequencies are not in use: http://www.stumbler.net/




  • Try using a different wireless network name (if one of your neighbours is using the same name, you could be experiencing conflicts)




  • Try re-entering your passphrase (on the wireless router's administrative interface and on your local computer for the wireless NIC)




  • Make sure the signal is strong (a weak signal can be caused by interference from a number of things, including microwave ovens, cellular phones, wiring in walls, etc.); if it's weak, then this could be causing your problem (try moving closer to the wireless router -- if this resolves the problem then the solution is to physically move the computer and/or the wireless router)




If all that fails, then your last option may have to be to replace the wireless router. Hopefully that's not the case for you.


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