Thanks for coming back to the community.
I understand you would like to change your computer for different model.
Please bear in mind LGA 775 Socket motherboards are no longer under production therefore market options are limited.
If you are going to use existing processor or memory, I recommend trying to get Intel 3 series boards, an example DP35DP, see below for specifications:
If you need more information about Intel products, please contact our presales team: