One line in your dxdiag.txt file says:
Page File: 3634MB used, 873MB available
The total of those two numbers is 4507 MB, which is less than the amount needed to burn a DVD.
I have found in practice, you need to have up to 4989 MB page file to consistently burn a DVD or DVD folder.
Other specs of your computer are just minimum.
Another thing, you are using an OLD build of PowerDirector 8, the current build is 3022. You should upgrade.
http://www.cyberlink.com/downloads/support/powerdirector/patches_en_US.html
Carl312: Windows 10 64-bit 8 GB RAM,AMD Phenom II X4 965 3.4 GHz,ATI Radeon HD 5770 1GB,240GB SSD,two 1TB HDs.