|I have a Dell Dimension 4400 and I am trying to upgrade the video card.|
The support documentation says the AGP bus protocols for the motherboard are 4x/2x modes at 1.5V. And the slot is a 1.5V keyed slot.
The video card I am trying to install is an ATI Radeon x1600 Pro 512MB DDR2 AGP 8x/4x card. It is keyed to fit a 1.5V slot.
The machine originally had a Geforce2 card installed in its AGP slot, which it boots fine with. That card was keyed for 1.5V and 3.3V.
When I try to boot with the Radeon card installed in the slot (with floppy power connected to card), I get nothing on the monitor. The fan on the GPU spins up right away (although it is kind of loud, probably wearing out) and the LED on the monitor is orange.
I thought it might be a power supply issue, so I swapped the supply with another. It says it is 300W, but only puts out 14A on the 12V rail which is no better than the 250W dell power supply that was installed as it turns out. But it was in a machine powering an x1300 Radeon card. The swap didn't help though. At that point I got smart and just unplugged the drives, but it still would not display anything.
I am thinking now that this card is just not compatible or is bad. Anyone have any experience with this?