m15 R5, BIOS update causes display issues and power button flashes red 2 times and blue 7 times

After accepting some recommended auto updates (don't know what BIOS version I was on previously as I never intentionally go out of my way to update a BIOS). I noticed that during the update process the fans went into overdrive (never heard it that loud before) then the screen went black. After it rebooted, I noticed the 2 RED 7 BLUE code flashing which after some research refers to "Display failure - SBIOS message".  The only way I can see anything is if I plug in an external display.

I've attempted the RTC method as per this article but considering the laptop screen itself won't work I don't know whether there is a way to tell if it actually did anything. I just saw that the alien power button flashed red a few times. After that I attempted to follow the remaining steps however the BIOS tool won't let you rollback. 

I can't try CTRL+ESC method since I can't see a thing on the laptop screen to attempt the BIOS recovery (external display won't work until Windows loads).

Considering I've seen a couple other posts of other people encountering the same issue after a BIOS update it is highly unlikely that we all suffered hardware failures straight after. If we did, then it would be due to the BIOS itself which is a problem which DELL should be addressing.

Other related posts which I saw that are reporting the same issue:

• https://www.dell.com/community/en/conversations/alienware/m15-r5-bios-1190-has-caused-radeon-display-adapter-failure/665fb200236bfd72a7c2fbe3
• https://www.dell.com/community/en/conversations/alienware/m15-r5-bios-update-power-button-flashes-2-red-and-7-blue-black-screen/666a0b0b0e1bb34f4112937e

Please help!