You will need specialized tools to send the emergency files to your device.
If the phone isn't recognized, manually update the driver in Device Manager, selecting "Care Suite Emergency Connectivity". lumia 650 emergency files top
If your Lumia 650 is simply stuck but recognized by the PC as "Nokia Boot Manager," you don't need manual emergency files. The automated solution is WDRT. However, when WDRT fails with "Software not available for this phone," you revert to the manual emergency files listed above. You will need specialized tools to send the
thor2.exe -mode vpl -maxtransfersizekb 1 -vplfile C:\LumiaFix\your_firmware.vpl Use code with caution. The automated solution is WDRT
guides/WIP-NewGuide.md at master · WOA-Project ... - GitHub
The Lumia 650 is notorious for refusing to boot if the battery drops below a critical voltage threshold. Even when plugged in, it may just vibrate periodically without turning on.