
Originally Posted by
Geheee
From what I understand, the reason you cannot select AGP 8x with the ATI 7000 installed is that the ATI 7000 is an AGP 4x card.
As to why your 9800 doesn't work with the MSI board I don't know. If you are sure that the video card is in working order then try resetting the CMOS once you have powered down and removed the ATI 7000, usually this involves moving a jumper over for a few seconds.
Once the CMOS is clear fit the 9800 to the motherboard making sure it is seating properly and power the computer back up. If things still aren't working and you are getting no video signal at all then it might help to report back the pattern of the beeps you are hearing so we can diagnose further.