if the onboard 6100 graphics are out, the chipset (and the mobo) could be toast. test with a pci-e card and be sure to test all built-in functionality (usb, sound, etc.)
if the mobo is bad and it's out of warranty, this biostar should drop right in. http://www.newegg.com/Product/Product.aspx?Item=N82E16813138269
microsoft may allow you to reactivate the windows license without repurchasing.
I am working on a computer for a friend and the port for the onboard graphics isn't sending any information to the monotor.What I would like to know is if i install a new graphics card to the pci-e slot.Would this fix the problem and if any geforce 5500 or above pci-e graphics card will work?