nonstop BSOD; always shows a failure of: igdkmd64.sys

[APSBKNewYork]

I cannot stop my computer from the BSOD.  It's an HP Pavilion Gaming 790-0050t CTO desktop PC.  It started when I shut down through the windows power down/shut down menu command.  The system seemed to be going very slow as it shut down, perhaps due to an update running.  I lost power before this shut down completed.

Now, every time on boot-up, I get a Blue Screen of Death, with a stopcode icon to scan with a camera.  I see the following text: 

Your device ran into a problem and needs to restart.  We're just collecting some error info, and then we'll restart for you.

For more information about this issue and possible fixes, visit

[content removed]

If you call a support person, give them this info:

Stop code: DRIVER UNLOADED WITHOUT CANCELLING PENDING OPERATIONS      --- please note that this message to the left can be different every time

What failed: igdkmd64.sys

I have tried many things available to me through the options in the Blue Screen: running system diagnostic tests like looking for hardware symptoms.  I can't get past this BSOD reboot.  I tried the command prompt to set AutoReboot = False, which didn't work.  I tried updating the bios with an external thumb drive with the correct bios file downloaded from HP support.  I've tried Reset the Embedded Controller,  Reset the CMOS, and Recover the BIOS.  I need a careful walkthrough to get this right.  I stupidly do not have a windows Recovery file.  I don't want to destroy my harddrive without first ensuring I can save everything that's on the hard drive.  

Windows 10 64 bit OS

Thanks!

[TheOldMan]

With things happening, I always try to run the Diagnostics routine, first.  This will tell if any hardware has been damaged.  A BSOD most likely is a Windows problem, but verify things in order.

To run the Diagnostics routine, Start tapping the Esc key BEFORE starting the PC and then press the start button.
Keep tapping the Esc key until a popup menu shows. Then pick Diagnostics from that popup menu, F2.
Report back with the results.

If all that passes, then you might need to get the install media from Microsoft for further testing.

If you need the install media for Windows 10, you can make it from this Microsoft download

https://www.microsoft.com/en-us/software-download/windows10

With a working PC, scroll down to the "Using the tool to create installation media"
and then follow the directions. You can make either the DVD or USB. We can use this to troubleshoot the Windows install or use this new media to install Windows 10, whichever the need be.