Problem need help

[Abyss of Borg]

Well my dad's rig is having some problems and I can't figure out what it is. When I turn it on I get 2 things first of all I get 2 beeping noises from the internal error speaker. Then I get an error message from my moniter saying "check you cable to video card." It could be a video card problem and I assume it is. The onboard video is dead so I threw in a Ati Rage 128 Pro I found in a desk drawer. Only has AGP so I can't test my card in my rig to see if it would work. I tried to boot it one stick of RAM at a time to see if it was a RAM problem with one stick but it is either something wrong with both sticks. I dunno. CPU cooler is working so I don't think it is a heat problem. I really have no clue what it could be.

Specs:
Sempron 2800+
Budget MSI Socket 754 Mobo
1 stick 256mb PC 2700
1 stick 256mb PC 3200
Rage 128 Pro
Thermaltake 430 Watt 20 Pin PSU
Aopen DVD Burner
40gb WD IDE HDD

 

[Qwertyman]

can you turn onboard video off in the bios?

 

[Abyss of Borg]

can you turn onboard video off in the bios?

No can't acess the bios. Nothing except 2 moniter errors come up like check the video cable and the one about this display is not hooked up or something. The other errors I get are just 2 beeps on bootup. The onboard video has been busted for a while maybe like 3 months.