Cant connect to my wireless network

Hey guys.

Dunno why I can't connect to my wireless network. I click connect, enter the password and it goes to " acquiring network address " mode, then it changes back to " Automatic ", then it keeps changing from these 2, and it doesn't connect.

I have been having this issue for a long time and the only way i can connect is via ethernet cable.

Please someone help me... i tryed different solutions that i searched, watched several videos and nothing works. I did format the pc today and this is still happening.

Regards.