XPS 8930, won't boot into Windows

Can you still get into bios by pressing F2 right after pressing power buttton?

If yes it still POST.  Try do a clean install of Windows 10 on your hdd/ssd.

Yes, I can get in the bios using F12 or F2. But I have no idea how to do a clean install. Will a clean install wipe out all my files. Thank you for your help.                                                        Sherry

Drive may be bad

Reinstall windows on new blank hard drive.

https://www.amazon.com/Seagate-BarraCuda-Internal-Drive-3-5-Inch/dp/B07H2RR55Q/

@jstblush  - Don't reinstall Win 10!

Reboot and tap F12 to open that menu. Choose the option to run Diagnostics, and run the extended (full) set of them. Copy error messages, if any, and post error code(s) here. If no errors, continue:

Since you cleared BIOS, you reset it to the default settings which may not be suitable for your hardware. So reboot and tap F2 to open BIOS setup. Use arrow, tab and Enter keys to navigate around.  Look first for the SATA Operations option. If it's set to AHCI, change it to RAID. Next, look for Boot Options Priorities and make sure Boot Option #1 is Windows Boot Manager. If not, make the boot manager first.

Don't change anything else in BIOS setup, but save your changes, if any, and exit setup. PC will attempt to boot automatically.

Tell us the outcome...

Okay, I will do that in a little bit. I am hooked up to my old, slow Dell to take care of some bills and things. I will let you know how it goes. I really appreciate your help because this old pc is not working that great and my 8930 isn't even that old! I have to keep switching my monitor and keyboard and power to use one then the other one. What a pain crawling under the desk to switch things. But I will not stop and hopefully with help I will get it figured out..

One thing I might mention is this message came up once:

Intel UNDI PXE-2.0 (build 083)

Copyright 1997-2000 Intel Corporation

For Killer E2400 PCIE Ethernet Controller vl.0.0.8a (7/29/2016)

PXE-EC8: !PXE structure was not found in UNDI driver code segment.

PXE-MOF: exiting PXE ROM

Boot failure on device, press any key to reboot the machine.

Then it goes to the Dell splash screen--there is a red circle with x in the middle--ePSA build 4306.25 VEFI ROM

Check cable connection!

PXE-MOF: exiting PXE ROM

Boot failure on device

Press any key to reboot the machine

So thank you so much!

Sherry

Okay, I did those things. No change. Says "Boot failure on device." Has a red circle with a white x in the middle. The SATA did have to be changed to RAID and also have to keep changing boot option 1 to Windows Boot Manager.

Is your boot drive a HDD or an SSD? Did you run all the extended Diagnostics? Were there any diagnostic error messages?

What color is the power button and steady or blinking when it won't boot?

Have you disconnected all USB devices, except mouse and keyboard?

How did you reset BIOS originally? Pulled the battery and held the power button for ~30 sec or used the jumper on the motherboard?

Open BIOS setup again and disable Boot Option #2 and #3 ("NIC") on the list. Also confirm SATA Operation is still set to RAID, and Windows Boot Manager is still first. Save the changes and see if it boots now.

You can also try this: Power PC on and when you see the Dell splash screen, immediately power off by pressing/holding the power button. Immediately power on again and then off again. Repeat the on/off cycles 3 times. After 3rd time, PC should boot to the Windows Recovery Environment.

When WRE opens, look for Troubleshooting>Startup Repair and run that....

you will lose all your files on the boot drive in a clean install.  data on your separate data drive will be untouched.

here are instructions should you want to take this route.  your problem could be Windows 10 corruption or failed boot device.  If you have multiple hdd and ssd in 8930, chances are OS was originally installed on the M.2 SSD (and hdd has your data file).  try disconnect cable from all the hdd then attempt clean install on the SSD.  If you are not sure how many drives are in the system that are detected working, go inside bios to look.

How to: Perform a Clean Install or Reinstall of Windows 10 - Microsoft Community

xps 8930 service manual for your reference.

I'm not sure about the hard drive answer. It says "First HDD 2000 GB" and "M.2. PCIe SSD 256 GB". So, I can tell you I moved most of my documents and pictures to the larger HDD drive. Windows 10 is on the SSD drive. I don't know why it says first HDD drive (the 2 TB drive).

The power button is orange for about one second when I first turn it on but immediately turns to white and stays solid white. 

Everything is disconnected except mouse, keyboard and monitor.

Pulled the battery and held the power button for 30 seconds.

Opened BIOS setup and disabled the 2 NIC options. Also made sure SATA operation is still RAID. Windows boot manager still first. Saved changes and tried to boot. No luck. Running all the extended diagnostics now.

Tried the power on/off cycle three times. Nothing. I wish WRE would open.   Will let you know what the diagnostics show, if anything. It says there is still 5 hours and 7 minutes left. Does that sound right?

Is secure boot supposed to enabled or disabled?

Thank you for sticking with me on this. I really appreciate the help.

Sherry

Thank you for this info. I will read the info on the links.. Not sure I am brave enough to attempt disconnecting hard drives. YIKES! Ever since I opened the tower to clear the CMOS my pc won't boot. So it makes me a little nervous. But I may have to end up doing something, right. 

And I do have 2 hard drives. An hdd and a ssd, with the operating system on the ssd drive. I did have my files and pictures all going on the ssd drive because that's the way they had it setup. But it was filling quick so I moved my files and pictures to the hdd drive.

Thanks, Sherry

it is not absolutely necessary to disconnect hard drive cables (hdd can stay installed in pc just with cables disconnected so they are physically inside but operationally off the system).  but just in case you might make a mistake confusing the hdd with ssd during a clean install, it is better to take the hdd with your data off the system.   The technique of this step is quite safe.  understand you had bad experience opening the case before and now feel apprehensive.  All you need to do is ground your fingers on the chassis once first before touching components inside.

after doing that, you should go back into bios to verify that only a small sized drive (ssd) is detected working.  If that is correct, you may attempt a clean install of Windows 10 on the ssd if you decide to take this option.  While you may also attempt repair the OS on ssd rather than a clean install, it is not guaranteed you would be successful.  On the other hand, as long as the ssd is still healthy and detected working by bios, you should be able to do a clean install in a straightforward manner without too much brainstorming.

@jstblush   - The power button turning white means the PC completed the POST (power on self test) successfully which is good.

The diagnostics take a while, depending on drive size(s) and amount of RAM. Be sure to copy error message(s) if any.

Assuming no errors from the diagnostics, you can try to fix the Win 10 installation. Go to the Microsoft site and follow their instructions to create a bootable USB stick (use an empty one at least 8 GB, but not larger than 32 GB). You can do this on any PC.

Plug that USB stick into the XPS 8930 with the power off. Then power on and tap F12 to open the menu. Select the option to boot from the USB stick.

When the Recovery Environment loads, look for Repair, Advanced Options, Startup Repair and run the repair. Copy error message(s) if any.

If that doesn't solve the problem, there are still a few more things to try before wiping and doing a clean install...

One other thing. I still have the results page up on the pc in case you needed some info. I wasn't sure how to get the info back in case you had questions, so I just left it up. Can I just close and get out of there now? I need to hook my old pc up to read about the bootable USB to try and get this thing fixed! ,:)

Sherry