When a Lumia 650 enters a "hard bricked" state—often appearing in Device Manager as —it has lost its primary boot instructions. To restore it, specialized "emergency files" are required:

Check the Pictures > Camera Roll and Documents folders. If files are missing, they may be on the microSD card ; remove the card and use a PC card reader for faster recovery. If the Device is Stuck (Boot Loop/Blue Screen) Use WPInternals on a Windows PC. Boot the phone into Mass Storage Mode .

thor2 -mode uefi -ffufile "C:\Path\To\RM1150_01054.00000.15122.15004.ffu"

Standard recovery tools (like Windows Device Recovery Tool) fail when the phone is in "QHSUSB_DLOAD" mode (a hard brick). Only emergency files can force a connection to the Qualcomm boot ROM.