I installed DVI cables yesterday. Then I turned off the computer & disconnected it for several hours. When I turned it on, I found the following:
1. the monitor will not work without a VGA cable; 2. that the computer does not recognize the new card, but rather tries to use the integrated circuitry (NVIDIA GeForce 6150SE), even though the new card is properly placed in the machine (it snapped into place) 3. there is nothing on the motherboard (HP Nettle 2-6L8E, a supposedly standard item) or the new card to connect a wire to; 4. the new card has never gone through autorun to install the new card, so it will not download any drivers; 5. the new card has never appeared in the device manager, only the old circuitry; 6. The images on the screen grow larger upon disabling the old circuitry, but when I initiate programs, the monitor states that it cannot handle them & gives me a black screen, at which time I hold down the on/off switch for 3 seconds in order to escape. I hope this information helps; I can't think of anything else at the moment.