can you take a picture of the video card? whats the model of the fan thats in there right now? whats the length between the mounting holes? this is all important information. I bought a 6770 with an obliterated fan and bought a replacement for $4, it screwed in perfect and plugs in perfect and runs perfect now.

http://www.ebay.com/itm/251056663293 is the card I bought that was broken.
http://www.ebay.com/itm/120873623826 is the fan I bought to replace is.
https://dl.dropbox.com/u/9768004/6770face.png is how it turned out