I did the windows 10 update Friday night and after completing the update I shut down the computer. When I turned it back on it went into a continual loop where the windows 10 symbol would display and the screen would flash on and off. I attemped all of the recovery options and used a recovery drive and even downloaded a bootable usb drive file and tried the repair feature. Both repair options fail and the option that save all files says the drive is locked and the option to wipe all files and repair says a partition is missing. Any ideas on what I can try?