Have a Dell laptop that will not load the OS

this is a Dell Inspiron 17r. I have windows 10 on it and it was running until this am. Right now it will not load Windows at all. I have a second dell that is running win10, but it is 64 bit. I tried using the auto repair and it failed. There are no restore points, and she did not back up the computer regularly. When it fails the auto fix process, the report that it is "unable to initialize the device PRN".

Looking this up, it seems to be related to the printer, but that should not the computer from starting. I am under the gun as this is the GF unit. I am trying to see if I can boot this into safe mode, but it's not clear how to do this unless it is directly in the bios and not handled during the boot sequence.

Disconnect all hardware from the notebook.
Disconnect all cables.
Only use the power cord.

There is a hardware method to open the windows advanced troubleshooting menu on the computer.
It may not work in your current circumstances but it's worth a shot.
Power on the computer and if you see the microsoft icon immediately power off.
Repeat this again powering on and powering off as soon as you see the Microsoft icon.
The third time power on and allow it to open the computer's windows advanced troubleshooting menu.

If the above fails create a bootable windows 10 iso.
It is free and available on the Microsoft website.
You will need a flash drive that you can format ( > or = 8 GB)
Download Windows 10

Once you have the iso you can boot to the iso using the applicable keyboard key.
Each computer manufacturer has a keyboard key to be able to boot to the bios boot menu:
List of PC brands with their corresponding hot-keys

When using the bootable windows 10 iso:
1) Insert the flash drive into any USB port
2) power on the notebook and click the applicable keyboard key F12
3) Select USB storage drive or USB external hard drive
4) It may take 5 - 10 minutes for the iso to load while viewing the windows icon
5) Select language, time ,currency, and keyboard, or click next
6) Click troubleshoot
7) Start with system restore (oldest restore point first and try every available restore point.) (if there are no restore points as per your opening post go to the next step.)
8) Startup repair (if startup repair fails advance to the next step)
9) command prompt > Administrator: X:\Windows\system32\cmd.exe > X:\Sources:>

10) Use a camera or smart phone camera to take pictures and post images into the thread.
For any problems posting images please use one drive, drop box, or google share links.

11) type: bootrec /fixmbr
12) type: bootrec /fixboot
13) type: bootrec /scanos
14) type: bootrec /rebuildbcd

15) type: type: bcdedit /enum
16) type: bcdedit | find "osdevice"
The above steps will display the drive letter with the partition.

17) sfc /scannow /offbootdir=G:\ /offwindir=G:\windows (change G to the applicable partition letter from the above steps)

18) chkdsk /f /r G: (change G: to the partition letter from the above steps)
19) reboot

20) The above command are command to fix the boot, the operating system, and the drive file system.
There are additional commands to fix the boot and the registry if needed.

Please post images of the results of each of the above steps into the thread.

21) If you are successful with the above steps perform the following steps:
a) Backup all files to another drive or to the cloud
b) Make a backup image using Macrium:
Macrium Software | Macrium Reflect Free
c) Make a brand new restore point.