nickr2021

I am having issues with the Dremel 3D Slicer Software version 1.2.3 which uses the Cura software.. For some reason when I load up the software, it keeps crashing and basically freezes my computer whereby I need to re-start.. I am currently using Windows 7 professional and I had no problems with the software before this happened??? Does anybody have any ideas how I can solve this software issue?