Are you using an ALI chipset MotherBoard? If so, then:
1. Ensure your MoBo is running the newest versions of it's BIOS, and check to see if your TNT card has a bios upgrade, also. (TNT1's only. TNT2's are already "fixed")
2. Ensure you are using Acer Laboratories, Inc (ALI)'s newest AGP and IDE drivers. Go to http://www.ali.com.tw/ to get them.
3. Make sure you change your display driver to "standard Display Adapter (VGA)" and RESTART windows once BEFORE you shutdown to change cards and/or graphics adapter drivers.
4. Pre-Download the newest drivers for your card. Don't even bother with the ones that came on the disk with the card- They are usually 90% broken to begin with. They will cause you heartache with any chipset.
5. Check for new driver/BIOS upgrades every couple of months, and install them if you find some. There are two reasons a company upgrades their drivers- A) To enhance stability. B) For better performance.
6. Goto 5
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