New Dell XPS8700. Upgraded from Win 8.1 to Windows 10 and worked fine for about a month.
On start-up, it now hangs on the Dell logo or when trying boot options to start from USB or recovery DVD go to blank black screen. Dell phone support sucked but they sent me a recovery USB drive (to factory set Win 8.1), however start-up would still hang at the Dell logo. Tried all different boot combinations from CD/DVD, USB, OS/Boot partition but cannot proceed beyond Dell logo or black/blank screen. I do not have a original Windows 10 OS disc, however did a download from
to USB and PC does not boot up from that media either.
Used an original Windows 7 Ultimate installation CD to start and get to command prompt to recover files from C: drive and can browse through all folders and files. Copied user data to USB drive. So HDD appears OK.
Any ideas? Please help!