I have an old DELL Dimension 8250 series PC with Windows XP I was trying today to connect it to the internet with an "tp-link AC600 Nano wireless USB adapter ARCHER T2U Nano" Eveything installed ok but, when I click "connect"on my network from the list. A small balloon pops up on the task bar saying windows needs a certificate to connect to my network. How can I fix this ? Its a bit weird because, If I click "connect" it seems to connect to the internet but its not. Internet Explorer does not work. It just shows what speed I have etc Anyway could anybody help me out please ? I dunno what to do