2005-12-11 14:26:22
There are a number of pieces of information that we need to know so that we can help. One of the main pieces is the motherboard manufacturer.
It would help to know what steps you took to install the new card. Did you uninstall the nVidia drivers first before installing the ATI card? How did you go about doing this?
The ATI card needs the newest DirectX (9.0c) installed and it also needs .Net Framework. If perchance you have recently installed .Net Framework 2, you many have to re-install .Net Framework 1.1 since the card's software may need that version of .Net which Windows sometimes gets rid of after installing .Net 2.
You may very well have a problem with the sis agp driver. Not knowing which of those fits your system, here are some I found that may be germane to you quandry:
SiS AGP Driver 1.16a Windows 98/ME/2000/XP download
SiS AGP Driver Version 1.16a For Windows 98 /ME /2000 /XP. Support:SiS630, SiS540, SiS630ET, SiS630E, SiS630S, SiS630ST, SiS635, SiS645,...
FileName:agp116a.zip
Two different Chipset Graphics drivers
SiS SiS630/SiS730 Chipset Graphics Driver 2.09 Windows XP download
SiS SiS630/SiS730 Chipset Graphics Driver 2.09 WinXP.--Supporing products:SiS630, SiS630E, SiS630ET, SiS630S, SiS630ST, SiS635, SiS730S,...
FileName:630_209_winxp.zip
SiS SiS651/SiS650 Chipset Graphics Driver 2.22 Windows 2000/XP download
SiS SiS651/SiS650 Chipset Graphics Driver 2.22 Windows 2000/XP
FileName:650_222_win2kxp.zip
Finally, did you try the card in another computer to see if it really works?
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