texture rendering

in some case openGL doesn’t render texture correctly, instead of an image for the texture i get lines (one of the 16 colors like blue red green yellow …)
i have S3 Savage4 397 i installed glsetup from glsetup.com (before i installed that openGL didn’t work at all and kept freezing),
but now it works fine except for some cases, and the rendering issue i’m running on win98 i have 128 ram