MTU recommends the ATI video card. If you have an HP Computer with the "Intel Chipset", the ATI card will not work.
BUT if you have the VIA Chipset, you will be OK.
This is a know issue with HP Computers. Further information can be obtain at the HP Forum Site at the LINK BELOW:
http://bizforums.itrc.hp.com/cm/Cate...1,,405,00.html