Vista Wireless Unable to Connect

Hey all - I have a question regarding Windows Vista wireless. I am running an HP Pavillon 6589us notebook, with Windows Vista Ultimate and the Intel Wireless Wifi Link 4965. Windows and the drivers are all up to date. Whenever I try to connect to our wireless network, I get the message "Windows is unable to connect to this network". Other laptops in the office (a Windows XP and Windows Vista Home Premium) are able to connect without any problems. Another Windows XP laptop, however, is also unable to connect! Can you think of any reason why this would be? My machine has been able to connect to other wireless networks with generally no problems....There is one XP computer connecting and one that can't, and one Vista connecting and one that can't! I am currently working in Mali (in Africa), so unfortunately there is no one around with IT expertise, and the guy who set up the network just said "Vista has problems with it sometimes" and had no answer...

 

Try this if you can see the network on your list of available network

right click on the connection name, and click properties
check if you have correct security type as the wireless at home (WPA, WPA2, WEP)... make sure it is right the type of security or else it will not connect

 

I have done that and double checked the settings - I even had the Vista Home Premium and my Vista Ultimate machines side by side, and all of the settings for this wireless network were identical on each machine.

 

Check to see if you have enough IP's available with DHCP enabled. And see if you you are using MAC Filtering.

 

Sorry for the newbie question...but how would I do that in Vista? Or is that on the router side?

 

mac filter is router

 

I've another post of similar problem. How do I check enough IP's? I also tried to turn acess control on/off on my router. But it is not connected.

 

Thanks for the help! The issue was with the MAC filter!

 

To check how many IP addresses you have available to distribute under DHCP, go onto your router's admin webpage, login, and on the particular page that contains the option to enable or disable DHCP, there should be a second option that specifies the range of IP addresses the router can assign when it's operating in DHCP mode - it should show something like: 192.168.1.1 to 192.168.1.xxx, where xxx is going to be some number - it should be a three digit number, something like 199 but, if you're running out of IPs it might be because it's been set to something absurdly low, like 005.