Could be you are using an old version of winpcap. Uninstall JMR and Winpcap manually using "Add Remove Programs", reboot and then install JMR and ensure npcap is selected. The latest npcap will be downloaded and installed as part of that.
I followed your instructions and it hasn't crashed anymore, thanks so much!!!
After following your instructions it worked fine for a week but since yesterday it started crashing again.
It freezes and shuts itself down and disconnects the internet to microsoft edge and google chrome.