XPS One 2710, black screen of death

So I recently bought a XPS One 2710 AIO from a friend.  It had Windows 8 on it when I got it and seemed to be running fine.  When I got it home I upgraded it to windows 10.  It ran fine with windows 10 until about a week after I installed it.  Now I am getting the black screen of death, the computer comes on, all the fans run and the backlight on the screen comes on briefly and then goes off, the computer continues to run but I don't get the dell logo POST, or any option or even a chance to get back into BIOS.

My issue is exactly the issue described in many various threads on the dell support site and other sites.  

Such as: https://www.tenforums.com/general-support/35636-windows-10-killed-my-dell-xps-2710-a-10.html

&

https://www.dell.com/community/Desktops-General/XPS-One-2710-Black-screen-on-boot-No-BIOS/td-p/5019007

This is a tutorial about how to fix it, which I have tried but not succeeded:

http://s3.amazonaws.com/Junk_Bucket/Dell_BSOD_FIX_Manual.PDF

This tutorial from the tenforums.com actually got me into the bios after getting the 5 RTC reset beeps but I was not able to make any changes becuase the computer was laying flat on it's screen, so I powered off thinking the problem was solved and would be able to get back to bios next time a powered up. That was the last time I saw the bios and that was about a 1000 more troubleshooting steps in the past.  I have tried the following process several times since then and have only been able to get the 5 beep codes again once or twice, but still no BIOS.  Here are the steps that worked for me (once):

"1.Follow the CMOS reset, clear NVRAM, and BIOS procedure (steps)-- Make sure to disconnect power!!!
a. Take out the coin battery and press the power button for 10 seconds to clear the CMOS to totally discharge it. Put battery back.
b. Locate both the 2-pin jumper plug for the password connector (PSWD), and the CMOS (RTCRST)-- RealTimeClockReset (look at the XPS user manual PDF--download for free).
c. Move both plugs to the left.
d. Connect power, press power button, and wait at least for 10 seconds. Turn power off.
e. Put back both plugs where they were before.

2. Now, to force a Realtime Clock Power Failure (5 beeps in your computer at power up--power on!)
a. This will hopefully get you where you can make some changes to the BIOS entries.
b. At power up press F2 and/or F12 (BIOS access and/or Boot setup)
c. With F2 you can make sure the date/time is correct , the hard drives are recognized, and the booting sequence.
d. This is what you really want...F12...Boot setup!! Here I solved my problem...and hopefully yours. What I did is to change the Boot Mode Setting from Legacy Boot to UEFI Boot. This made the Windows Boot Loader (WBL) take over the booting process and....presto!! I got my system working back!!!
e. MAKE SURE YOU PUT THE BATTERY BACK BEFORE PRESSING ENTER TO SELECT UEFI BOOT!!!
f. I had DELL BIOS A11 so I updated to A12 while in Windows before I rebooted for second time to see if I really got it working. Know what? I DID!!!! 8-)"

 From what I am gathering this machine does not cooperate with windows 10 and an automatic BIOS update may have corrupted my BIOS.  All signs point to a corrupt BIOS.  Although, my power supply seems to be acting up as in makes a "spring noise" when it shuts off and during this troubleshooting process, my machine has powered off on its own several times and then turns itself back on, which to me seems strange.

I believe I have tried everything and I am getting very frustrated.  Some company in Florida said they could fix it if i mail the mobo to them, for $110 and they also said Windows 10 caused it and it was a bios issue.

Kevin from Alaska.