Brechtje Smit

Hi all, Im trying to login at second life but it keeps telling me i cannot login because my video card is not known for some reason, i just bought a new pc a few weeks ago but i could login the first week i had it. now i can show you a screenshot of what the game is telling me but its easier to just copy paste the text: Login Failed. Despite our best efforts, something unexpected has gone wrong. Please check status.secondlifregrid.net to see if there is a known problem with the service. If you continue to experience problems, please check your network and firewall setup. Well i checked out the website a few hundred times but nothing came out, i also had my son checking out the firewall en the network setup but he said there isnt anything wrong with it. So my question is , who knows what the problem is with the game or my pc and please tell me how to fix it. Thanks in advance and best regards, Brechtje