m15 R5, BIOS update, power button flashes 2 red and 7 blue, black screen

I currently am experiencing the exact same problem after updating the bios. I have not found a single solution and have tried almost every troubleshooting guide I could find. Contacting an agent through the chat didn't help either. They had me run the same tests I already performed and then sent me to elevated support, which cost $99 just to speak with someone, which in my opinion is ridiculous considering the recommended update is what caused the issue to begin with.

Per the article, did you try =

Recover the laptop by resetting the Real Time Clock (RTC)

After connecting the m15 R5 to its AC power supply and then connecting to an external monitor via the HDMI out port or USB-C/DP port, recover the default BIOS using the BIOS recovery screen. Could you post a video of this showing the external monitor screens?

@DELL-Chris M​ Thank you for responding to my post, I appreciate it. I'm not sure if either of the two videos I took are what you were asking for or not. If they aren't I can redo them.

Hi @Deeds921 

Were you able to solve your issue?

@DELL-Nat M​ Not on my own. I tried replacing the LCD monitor, which didn't change anything and ended up renewing my warranty and opting for premium support. The agent who helped me had me send it into the repair depot to replace the motherboard and LCD. He had mentioned something else too, but can't recall what it was. It's supposed to be back any day so I'm hoping everything is working again. Thanks for following up.

Hi, how's it going, bro? Look, I had the same problem after the latest BIOS update. When I was in the process of an automatic restart, my laptop turned off and stopped displaying video on the screen. The power icon just blinked 2 times red and 7 times blue. The solution, which I did at my own risk, was to disassemble the back of my laptop to disconnect the battery and then reconnect it. And guess what happened? It got fixed. I also tried connecting it to an external monitor, but there was no image either. I hope this helps you (I have the same model as you, the m15 R5). I hope there aren't too many translation errors; a translator did it.

<Profanity is never allowed on our Forum. Edits done. DELL-Admin>, how is this even completely possible? DELL do something. Just updated my m15 r5, nothing just black screen.

@DELL-Chris M​ 

Just want to le you know, After trying ur TCP method I'm in restart purgatory. Now my display isn't showing and external hdmi is not showing as well.

Thank you Chris and Dell team for this update.

@DELL-Nat M​ This is not a solution, as after talking with support Dell is unable to provide a downgrade option that doesn't involve the BIOS.