I have spent most of the day trying to upgrade to windows 10 only to find out that the DX58SO motherboard does not have updated drivers to allow for the upgrade and was unsuccessful in finding an update for the drivers anywhere. Help.
You will find that Intel is not providing drivers for older boards to upgrade to Windows 10, as these boards are not supported on Windows 10. You will need to use the generic/inbox drivers provided by Microsoft.
What drivers are you looking for?
Al_Hill provided the correct answer, your motherboard does not support Windows® 10, see here for the supported operating systems http://www.intel.com/content/www/us/en/support/boards-and-kits/000005640.html Supported Operating Systems for Boards and Kits.