Hi Lanster,
I can not suggest a fix for you're Mercury PNMCP73V board because you have not mentioned what the problem is.
I personnally do not like Mercury.
Here is a link to the Mercury board, PNMCP73V. (Click on the link).
http://www.mercury-pc.com/product-detail.php?link=p-mainboards&subtitle=Mainboard&productid=766
Can I suggest the Asus board P5B Deluxe
Here is the Asus P5B Deluxe.
http://www.asus.com/products.aspx?modelmenu=1&model=1179&l1=3&l2=11&l3=307
As you will notice the Asus is a better board. All Asus boards come with a three year warranty.
Both boards support the Core 2 Duo Processor E8200, LGA775 CPU.
Asus supports up to 6 serial ATA SATAII 3.0GB drives & 4 IDE drives. 2 PCI-E video cards & a great coolong system.
If I can be of more service, just post & let me know how thing go.
Please go to you're fixya account. Sign in & click on the post for this issue & vote!
Mike