Hi DD. I'm Greg, an installation specialist, 10 year Windows MVP, and Volunteer Moderator. If you will work with me I will be here to help until the issue is resolved.
Unplug power and remove battery, press and hold power button for 30 seconds to release all power from circuitry, plug back in and power up to see if any change.
I will give you steps to access the Repair Mode to try all repairs to get Windows started, and if not to do the automated Reset or the superior Clean Install after rescuing your files. I will be standing by to help as needed and will not let you fail.
- Use whichever method works in this link to access Advanced Startup Options: https://www.tenforums.com/tutorials/2294-advanc.... Easiest may be to force shut down the PC (by holding in the power button) three separate times to trigger the Startup Options. If one of these methods work, then go to Step 3.
- If none of the other methods work it may be necessary to Create Windows 10 Installation Media on another PC following the steps in the middle of the downloads page here: http://windows.microsoft.com/en-us/windows-10/m... Make sure to uncheck the box for Recommended Settings to choose only the licensed version.
Insert media, boot it by powering up PC while pressing the BIOS Boot Menu Key: https://www.sysnative.com/forums/hardware-tutor...
Choose the boot device as a UEFI device if offered, then on second screen choose Repair Your Computer.
If the media won't boot you may need to enter BIOS/UEFI Setup (pressing key given in chart in link above) to turn off Fast Boot or Fast Startup first. There is always a way to get the media booted and I will guide you until it does, even if necessary to reset the BIOS to defaults via several methods.
- In the Advanced Troubleshooting options try to System Restore to a point before the problems began, try the new Uninstall Updates button, then Startup Repair, or return to Troubleshoot options to Reset Your Windows 10 PC.
- Better yet use the same booted media to do the vastly superior Clean Install following the steps in this link to delete all partitions down to Unallocated Space to get it cleanest: http://answers.microsoft.com/en-us/windows/wiki...
- There is a step to Rescue Files from the booted media or Repair Mode Command Prompt first: http://answers.microsoft.com/en-us/windows/wiki...
- If you want to continue troubleshooting see this tutorial that compiles everything possible for Troubleshooting Windows 10 Failure to Start: http://answers.microsoft.com/en-us/windows/wiki....
- To test hardware, Dell and HP have onboard diagnostics triggered by powering up and pressing the F12 and ESC key respectively.
8)Test the RAM overnight to stress it with the best bootable test memtest86, following these steps which test both the sticks and the slots:
https://www.wikihow.com/Test-PC-RAM-with-MemTest86
9)Test the hard drive with diagnostics:
https://www.lifewire.com/free-hard-drive-testin...
Best is to use the manufacturer's own if there is one, otherwise use Seatools bootable long test: http://blog.nowherelan.com/2013/04/04/boot-seat...
Follow this up with a full Disk Check: https://www.groovypost.com/howto/check-hard-dri...
I hope this helps. Feel free to ask back any questions and let us know how it goes. I will keep working with you until it's resolved.
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