I will try to help you.
When you say presentation do you mean a PowerPoint or and EasyWorship Presentation? If PowerPoint what version of MS Office is installed?
Open EasyWorship and click on HELP//ABOUT EASYWORSHIP and let me know which version and build number you are running.
Click on the Windows icon (Start menu) at the bottom left-hand corner of the screen,
Type in "DXDIAG" and click on 'DXDIAG.exe' or 'DXDIAG run command',
Click Yes when a yes/no question appears,
Click on Save All Information.. at the bottom-right of the DXDIAG window,
Save the information under and obvious name such as "dxdiagoutput",
Attach the saved file to this ticket.
When going live the presentation slide auto changes, but the live feed stops and everything else freezes and i cant stop it or even close it without shutting down computer