Managing sound and video settings during Teams meetings and calls for optimal communication
Hi Jennin22,
Welcome posting in the forum.
Based on your description, my understanding is that when you share contents in Teams meeting, your screen freezes and crashes.
Given your situation, you may try below methods to see if there are any improvement:
1: check Teams desktop app update, click your profile picture at top right bar > check for updates.
2: try to reinstall Teams desktop app.
3: try to access Teams web app to see if the same issue happens, if you can use it without issue, you may use Teams web app as a workaround.
4: since you mention you got this issue with share presentation (PPT), you may try to share the entire screen then test the result.
if you got any updates, please feel free to share with us.
Regards,
Grace