Evening all, A friend of mine has a Dell Studio 540 which is about 18 months or so old. Recently after 30mins or so of gaming the screen would go blank for a minute or so, then come back for a couple of mins, then go off again, etc etc. Apparently its now doing this after even shorter time. It came with a 9800GT graphics card, and my first thought is that this was overheating, however checking with GPU-Z it didn't go over 75 degrees after an hour of gaming, and also checking the CPU with RealTemp that didn't go over 65 degrees. I am still convinced its a graphics card problem though. The next step it seems like would be to get a new card. Then there is the next problem of finding a card which will work ok with the current PSU, which is believe is 350w, with one 6pin power for the GFX card. Its enough to run a 9800GT as standard so what would be the best card to get to suit these power requirements? I was hoping for 5770 but that may be a bit too much? Any help is much appreciated!