Aurora R10, failed to boot, cannot reset computer

I have an old Alienware Aurora Ryzen Edition R10. One day after a Windows system update, I booted my computer and logged in, Windows desktop showed up. I went for a nap and when I woke up, the blue screen showed up saying the system cannot boot. I thought it was a normal graphics card failure and tried to just restart my computer, but it never succeeded booting ever again. Icannot factory reimage, cannot Reinstall Windows using the Dell OS Recovery Image.

It usually starts like this: the alienware logo is here and the little circle would be spinning slowly for like a minute:

And it restarted, doing automatic repair and diagnosis:

Then it shows up the normal windows booting failure screen giving you a bunch of options.

I tried all kinds of methods, including resetting my computer (not wiping out/wiping out my personal data), factory reimaging, etc. But the resetting process always fails and falls back to undoing reset. The factory reimage fails because the SupprtAssist OS Recovery cannot load. It usually shows the loading screen like below for half a minute and restart into the booting process again (booting, automatic repair, diagnosing PC, startup failure).

I even tried the option of Reinstall Windows using the Dell OS Recovery Image from a flash drive, and reboot using the flashdrive by pressing F12 during booting phase, and it also failed because this Dell tool also depends on the SupportAssist OS Recovery tool which cannot be loaded successfully.

There is no hardware issue according to all the checks 

<Private data removed from public view. DELL-Admin>

So what should I do to let my alienware desktop boot again? Thanks!