Steam Machine R1, Bios update disaster

I've had the Alienware Steam Machine (4165T) for about a year and a half as my living room console. Its been great and awesome and only recently started slowing down. So I upgraded the RAM and hard drive to an SSD drive.

After reinstalling Windows to the SSD drive, it upgraded to BIOS A06 (I think I had been on A04 or A05).

After this I started getting the Bluescreen about some Power adapter issue. Everything I read up said the best thing to do was to rollback to an earlier BIOS.

So what do you think happened as I rolling back to an earlier BIOS. The system crashed in the middle of the BIOS.

Now I only get the yellow ring (sometimes flashing, sometimes not). All the solutions on Youtube and forums are not working. The only solution I see is to get a BIOS chip off of EBAY and solder it on (complicated) and maybe that'll work?

To me, this is ridiculous, this was an official update, recommended by Dell's software. It didn't work and rolling back was an option, but it shouldn't have destroyed my machine beyond recovery. Furthermore these systems are rare and expensive. I can't really find any at a decent price.

Does anyone have any thoughts/tips/solutions on what I should do. I just find it hard to believe a relatively simple upgrade (but expensive between the RAM and SSD) ended up in the ruining of my hardware.

Thanks all.