[10:38:08][pdx_audio_sdl.cpp:88]: Failed to init subsystem: Audio target 'directsounds' not availableI see you have CK2, does that have the same problem?
DXDIAG is a program you run from a command prompt or the Windows start menu 'run' dialog box (or 'search programs' in Windows 7 or later). After running it will open a window and start collecting info with a progress bar in the lower-left corner. When it completes click the 'save all information' button and save it to a file then attach that file here.
Please attach your Documents/Paradox/EU4/settings.txt and pdx_settings.txt .