wireless network connection doesnt have a valid ip configuration

[Alex98909]

Some of you may know i had issues with changing my mac address and all. I finally fixed and it worked for a day until out of no where my wifi connection crashes and when i trouble shoot it says "wireless network connection doesnt have a valid ip configuration"... I have tried some fixes but none of them worked.

It might be related to what i did yesterday, what i did is setting ipv4 and ipv6 from my wirelesss adapter to auto set and it worked flawless for a day.... I have no idea what was set before that but im at this point where im about to just format the laptop

 

[Alex98909]

So i formatted my computer and it still gives me that. Its weird because if it was mac address filtering im pretty sure it wouldnt say that it would say problem with router

 

[kimdonghwan]

Did you check the Router if the DHCP Server is on? i think it's the Router problem.
If you set the IPv4 & IPv6 to Auto, then you need a DHCP Server to get the IP automatically.

If your Router's DCHP Server is Off, then you need to set the IP manually.
i suggest you to remove or uncheck the IPv6, use the IPv4 instead.

You need to know your Router's IP Address, let's say it's 192.168.1.1, then set your local IP to 192.168.1.x (x can be any number between 2 to 254).
Set the Gateway to 192.168.1.1 as well as the DNS.

Hope this help