Without BIOS, splash screen or such that points to some PC issue, not a failed OS.
Try the usual generic reset. Takes a minute.
Power down, remove AC, remove battery, press and hold the power button for 60 seconds, release, slip in battery, apply AC and try again. If the Dell screens don't show it needs repair.
As to format the drive and start over I never do that. I erase the drive and start over as formatting a drive can trip up a Windows install.
I tried to updated my dell Inspiron 3520 from windows 8 to windows 10. It resulted in a black screen and i was not able to even power up fully. There was no cursor on the screen. When I hit the power button, the hard drive would whir for a second and then absolutely nothing.
I tried booting it up using a bootable USB and tried using a win 8 iso image, but didnt work.
Ultimately I opened up the pc and took out the hard drive. I can now read the hard drive as an external drive using USB on another PC. Is there anything i can do to fix the issue on the hard drive and then install it back?
Do i just format the hard drive and start over?
Any help will be appreciated.