Hello @learningelastic,
Because Elastic Agent is installed as an auto-starting service, it will restart automatically if the system is rebooted. So, what is the status of your agent? elastic-agent status logs: C:\Program Files\Elastic\Agent\data\elastic-agent-*\logs\
If any Elastic Agent-related processes are still running, stop them and then try running the following commands:
cd %TEMP%
copy "c:\Program Files\Elastic\Endpoint\elastic-endpoint.exe" elastic-endpoint.exe
.\elastic-endpoint.exe uninstall
del .\elastic-endpoint.exe
Hope this helps but I would also check this link: troubleshoot common problems.