The Asus P4C800E deluxe motherboard utilizes a firmware utility known as BIOS to ensure all hardware parts connected to motherboard are prepared. If you attach devices to motherboard that BIOS can't detect, the hardware stop working or system could crash. To solve this problem you require to download and install new update to BIOS, which can be acquired straight through Asus.

Instructions
Step 1
Go to Resources link for Asus BIOS support page. Fine latest BIOS update version on page.
Step 2
Click on download link and select "Save As." Select a destination folder and click "Save."
Step 3
Click "BIOS Utilities." Tick on link for latest edition of new Asus BIOS software. Pick "Save As" and pick folder where BIOS file stored.
Step 4
Right tick BIOS file and select "Extract here." Wait for file to complete extracting and then do again the process with BIOS update software.
Step 5
Double tick the Asus BIOS software updater file. Wait for BIOS to complete updating and then reboot PC.