I don't really have any help for you. But I didn't want you to think your request for help was being completely ignored either.
Doing a few Google searches for C1900101-400D, and Dell Inspiron 3451 upgrade to Windows 10 brought so many different solutions, I'm not sure where to start. All I know for certain is that Dell says this laptop can be updated to Windows 10 without issues from drivers.
Some of the things that keep popping up are obvious, like making certain that the computer has no virus or rootkit infections before trying to upgrade. Others include turning off your anti-virus temporarily until the upgrade completes. Many have had issues if they have any type of USB device plugged in.
You should probably do a sfc /scannow in an admin level command prompt before trying to upgrade.