Replacing an AGP graphics card required AGP Aperture Size to be changed in the BIOS
Originally published at Dom's Blog. You can comment here or there.
I spend some time yesterday evening upgrading my Dad’s PC from an NVidia FX5200 to an NVidia GeForce 6200. The old card was difficult enough to remove, thanks to large quantities of glue (presumably to reduce vibration and connectivity problems in this quiet PC), and I managed to knock off a heatsink in the process. Once the new card was installed, the drivers appears to install ok, but the card was still not being detected.
Windows XP’s Device Manager shows a yellow warning triangle for the new card, and the properties showed the following message:
“The device cannot find enough free resources that it can use (Code 12). If you want to use this device, you will need to disable one of the other devices on this system.”
It turned out that the BIOS setting for “AGP Aperture Size” needed to be increased from 128 MB to 256 MB to allow the new card to function properly, but the error above gives no clue about this.