Hi, Its -2 degrees here in Liverpool at the moment, but my graphics card is running at 50 degrees stock, and has for the first time just locked up despite me just surfing the net on my computer. It used to get to about 55degrees after playing games for hours in the summer, but never locked up. Then it began to get to about 63degrees and started locking up a lot when gaming unless i took the side panel off. The cooling on it has obviousy messed up, but not it seems the actual card is damaged becasue its seizing up at 50degrees. I assume its the card casuing the computer to sieze up (everything just stops, i cant move my mouse and the sound sticks as a high pitched noise, but the last imagine on the screen remains and isnt garbled - am i right in thinking its my graphics card causing this?) Its a 7800GT and i got it at about christmas 2005. What can i do to get it fixed? Should i send it back to nvidia?