http://www.youtube.com/watch?v=hM2q-W-D99g hi, I have big problem with NVIDIA GeForce 8800, I see vertical lines with colors in my monitor, but the big problems is that when start the system show the apple and the little circle start to rotate... and stop! but the computer continue read the hd etc... so with my keyboard I can restart of shutdown. so my conclusion is the system etc... goes well but the video card have a problem and dont show the system... start but dont continue and that colors big lines verticals. help 2 questions: 1. is possible fixed? some drivers or ... I dont know (hard because I can enter to the system) 2. if I need replace what card works? links please! to buy by the way: a) Im running the last system snow leopard at the day... updated... b) I running hardware test and show me NO ERRORS! so more confused to me... c) I not new in this forum, but I need create a new account beacuse I dont know the pass of the my normal account (because obvious I have this problem and I can see my passwords) please see this picture and video!! when try to start and stop! (stop visually because the system continue running): http://www.youtube.com/watch?v=hM2q-W-D99g really thank you, this forum always help me thank guys any help?