Member Avatar for pacopaitz

Here is my problem,
When I use the integrated graphics card that came with my computer, the monitor works fine. But I have a ati 9100 graphics card and whenever I install it, the monitor makes everything green colored. I noticed one of the pins is missing on the 15 pin vga connector, could this be the problem or is it something else, HELP!

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A short, practical diagnostic path that builds on the points from , and .

Start by isolating software vs hardware. Reboot to the BIOS or watch the POST/boot screens: if the image is green before Windows loads, the fault is almost certainly physical (cable, connector, or the card hardware). If the green tint appears only after Windows starts, use Safe Mode or the generic VGA driver and reinstall the ATI drivers and Catalyst/Control Center color settings — that will tell you if a driver or profile is responsible.

If it looks like a hardware issue, check the video cable and connectors first. Swap in a known-good VGA cable and make sure the connector screws are tightened. Visually inspect the connector for bent or broken pins (focus on the three adjacent color pins that carry R, G and B). If you can, test the card with a different monitor and test the monitor with another PC. Those swaps remove the guesswork quickly.

If swaps point to the card, do basic physical checks: reseat the card, confirm the slot is clean, and ground yourself before handling to avoid ESD. Continuity testing or an oscilloscope on the RGB pins will confirm whether the red/blue channels are actually present. A persistent green-only output with a good cable strongly suggests a failed analog output stage (DAC or associated components) on the card; that usually means repair or replacement rather than a simple tweak.

If the fault is unclear after those steps, consider professional repair or RMA. Avoid attempting PCB rework or soldering unless experienced — replacing the card is generally faster and safer for most users.

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Member Avatar for whipaway

sounds like there is no red and blue output from the card. You can try to scope the pins to see if the signals are there or not.

Member Avatar for DMR

It's normal for one of pins (#9, I think) to be missing on a standard VGA/SVGA subminiature 15-pin D connector. Can you test the card in another machine? If you can, do so. Also make absolutely sure that you're using the right driver(s) for the card.

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