Hi I am upgrading my PC soon with a new, Graphics card, processor, motherboard, & RAM memory, and wanted to no if i will have to reformat my hardrive and have a fresh install of windows 7??. I am going from AMD socket 939 to intel quad core 775.....
A clean install will be essential. The drivers for your old motherboard are totally different and will need to be replaced.
Also bear in mind that if you do not have a FULL retail copy of Windows you will fall foul of Microsofts policy on re-installation and may have to purchase a new copy of the OS.
Some have pleaded that the motherboard blew, and have obtained a new key, but I'd check first.
If you can buy a bundle, the supplier may include a new copy with the new kit....Either way, a re-format and install will be required, so backup all tour music photo's docs. etc before installation of windows.
All your applications will also need to be re-installed as well.