Local area connection doesn't have a valid ip configuration

Hello guys.

I'm here seeking help due to a problem I've been facing for a long time.

First of all this all started when I was making some researching about how to change mac address. I changed due to the control I had with router's firewall. I first installed a programm that I thought was great and could do that with no problems. I thought wrong, it kinda messed up my wireless connection and from that moment I've started using LAN, once wireless wasn't available anymore (When I go to device manager and to "network adapets" the "802.11 n/g/b Wireless LAN USB Adapter" has a yellow icon with a "!" and when I double click on it the device status says "This device cannot start. (Code 10).

I wonder if that has any kind of solution, but if it doesn't that's not the main reason why I'm making this thread. The main reason is basically due to a problem that happened to me yesterday. I installed driver booster and noticed that I had a lot of drivers out dated (incluiding some network adapters), so I decided to update them. When all the updates finished, I was no longer able to connect to internet. The yellow icon with a "!" appeared and the first thing I've tried to do to solve it was to run device manager and see if I could roll back the drivers. Some of them I could, some not. It didn't fix it so I tried a system restore and a startup restore which didn't work aswell, it would stay in the initial phase for hours, stuck on an infite load. As I saw there was no way around, I troubleshooted it to see what was the problem with the network and it seems like "Local Area Connection 2 doesn't have a valid ip configuration" was the problem. Made a lot of research, tried a lot of things but noone of those worked, so I'm hoping I can get some help here.

Appreciate all the help, cheers.