I have a flash drive in my security camera system. Its a walmart 128 GB formatted exfat. I pulled it out and was going to pull some video it froze the whole pc. I tried on another pc same issue. I brought out my surface and tried a chkdsk it froze at 0% would not move. Tried to copy the data after plugging it back in. Thats was a no go. Reformated it as exfat and ran chkdsk /r it ran without issue. Also the pc did not lock up. Any idea what happened? The only thing i got is the power went out and after inwas getting backup failed messages. Maybe the power blink caused some corruption that just got embed deep in it.