HD6870 install help

This is my first time ever working on a PC, and I thought everything went smooth. However, I can't seem to get my HD6870 to work, it fires up but the PC seems to only use the integrated Intel HD Graphics Dynamic Video Memory Technology 5.0

This is my ASUS computer (CG5275):

http://reviews.cnet.com/desktops/asus-essentio-cg5275-a...

I bought this graphics card (along with a new power supply), Sapphire Radeon HD 6870:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...




This is where I'm at...

1 - Followed AMD's directions to uninstall all AMD drivers and software.

2 - Updated BIOS.

3 - Used BIOS

Advanced>Chipset>Uncore Configurations>Initiate Graphic Adapter

My options: (IGD) (PCI/IGD) (PCI/PEG) (PEG/IGD) (PEG/PCI)

Chose (PEG/IGD)

4 - Installed the latest AMD drivers from the AMD website, used Catalyst.

5 - Catalyst states "Installation complete (warnings occurred during installation". View log for details.

Log pretty much say nothing except "Final Status: Success", under that it says "other detected devices" and "error messages", but there is nothing listed under either category.

6 - I cant seem to get the computer to even recognize the HD6870, nothing comes up in the device manager, and I also tried disabling the integrated Intel card.


7 - Get frustrated. This is my first time ever really trying to do anything with my computer, and Ill take ANY advice I can get.


Thanks in advance for any help/advice!