Mind you just last month same issue and it was a failed HDD that passed all diags. Really painful to diagnose but it failed again after a wipe and reinstall.
My mom has an Dell Inspiron N5050 which she recently upgraded from windows 7 to 10. Today it said it was updating and not to restart it, but after several hours of a black screen she decided to force off and on again. Now it will only say "preparing automatic repair" and "diagnosing your PC" before leading to the blue screen.
Can't figure out how to get into safe mode, F8 does nothing. Can't use system restore (no restore points), can't use reset pc or "startup recovery" (they give unspecified errors), "Startup Settings" claims it can get me into safe mode but upon restarting I'm brought back to the old blue screen with no new options. Is there something I can do from command prompt? I tried "msconfig" but it won't recognize it.
Also ran the Dell diagnostic test from setup (F2) which reported no problems.
Thanks so much.