Prescott 800 is not a motherboard model number, it's a chipset that was used on hundreds of motherboards including some made by Asrock. You need to provide the actual Asrock motherboard model if you expect anyone to help.
If you're unable to do so, then I suggest using this program:
To find make and model of pc hardware,
EVEREST Home Edition is a free system diagnostics, system information program that will id
most hardware onboard a mb. as well as the actual motherboard. It will, in some cases, actually provide a download link for the driver.
http://www.softpedia.com/get/System/...-Edition.shtml
Alternate Everest download link: (offers 2 sites to dl program from)
http://www.softpedia.com/progDownloa...oad-16369.html
Run the program and then:
Click on
Computer
Click on
Summary
Right hand window (hardware) if the text is
BLUE this is a link to the web site for that particular hardware.
If you have additional questions or need further help, please post a "copy and paste" of the COMPUTER SUMMARY report (Leave out the Debug –PCI section) from Everest.
Or you can visit the
Asrock driver page to see if you can match your unknown motherboard with one of the valid model numbers they have listed.