My friend has a HP M7760n. It a couple years old now. I gave him a working 600w power supply to upgrade his OEM PS from 300w. He went out and bought a new XFX 5770 card today to replace his 8600GTS that failed. The new card went in fine but we are not getting any video signal out of it. Fan on the video card turns on. An old ATI x300 works fine and so does the onboard. I have reseated the card and still no video. He has already taken the card back and exchanged it for another one. The second card does the same thing. Have I overlooked anything? Should this card work in this system?
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