Dell Data Safe

After several weeks of ignoring an automated request to download an upgrade to Data Safe I accidently clicked OK.  The program went through a download and install routine, then the final message was a restart was required.  My Dell closed down and began a reboot, and stopped, I had to do a hard shutdown to get to a fresh boot screen but nothing worked.  Spend over two hours on line with Dell support and nothing they suggested helped.  The final sugggestion was to do a drive wipe and reinstall the OS.  No one offered an acceptable solution for recovering my data.  I tried a DOS Command Prompt for a copy routine and was able to copy my data files onto a WD My Passport drive, something the Dell tech should have known.