I had this problem too, which prompted me to run diskwarrior. The program found "The Boot Blocks are damaged" but even afterwords I still had the same issue (along with certain un-repairable permissions and the warring about reserve power), so I wiped the SSD
drive reformatted and reinstalled from a backup, ran DELFI 1.1 and it hasn't happened again. I guess maybe something got messed up during the initial install (or a bad Block on the Drive?). Anyways, this seems to have worked for me. Good luck (now if I could only stop the white noise problem!!)
P.S I also had hibernate disabled in DellEFI and when that didn't work tried the command line stuff to no permanent avail.