PIII 450, Voodoo3 3000 16mb, 128 RAM

When I first boot up my computer, _sometimes_ it likes to think that my screen resolution options are 640x480 and 800x600. When I restart (42 seconds), my computer suddenly remembers that my Voodoo 3 supports up to 16?? x 12?? resolutions.

This problem first occured when I installed a patch FROM 3dfx to make Quake 3 Arena look better. I installed the patch an viola! my resolution options went to nil.

So, I reinstalled the drivers from the CD that came with my card (bought a week ago) and all was well...

However, this problem still crops up. I am confused. Does anyone have any ideas? I work with computers all the time, and I'm not sure why it starts up one way and suddenly has an epiphony and works after a reboot.