I know there are a lot of posts with similar issue, and I've tried most of the fixes suggested, but maybe I'm missing something.

Long story short, BIOS update failed.

Sequence of events:

1. Updated from Win 7 to Win 10 (first mistake)
2. Started having micro freezes when playing games--not a drop in FPS, just a straight up frozen screen for 0.5-1 second every few minutes.
3. Tried a variety of different Nvidia drivers, messed with monitor settings, etc -- everything I could find online until the conversations became about RAM frequency and updating the BIOS
4. Logged into the Dell SupportAssist, ran all the system checks. It said everything was fine but recommended drivers and BIOS update (second mistake). I think I was at A03 and it suggested A14--I don't recall.
5. Downloaded the A14 .exe and ran it in Windows. It said I had to update to A06 first.
6. Downloaded A06 .exe and ran it in Windows. Stuff happened and the computer shutdown.
7. Computer powered back on but never booted up, just a single repeating beep. I let this go for several minutes while reading through the forums to see what to do next--which seemed to be clearing the CMOS.

What I've tried so far:

1. Moved the CMOS jumper from pins 2-3 to pins 1-2. Waited for 5-10 seconds with power disconnected. Moved the CMOS jumper back to pin 2-3, reconnected power, powered on, still beeps.
2. Moved the CMOS jumper from pins 2-3 to pins 1-2. Waited for 5-10 seconds. Connected AC power for 5-10 seconds. Disconnected AC power. Moved the CMOS jumper back to pins 2-3, reconnected power, powered on, still beeps.
3. Moved the CMOS jumper form pins 2-3 to pins 1-2. Waited, Connected AC power, powered on, still beeps, powered off, disconnected AC power, moved CMOS jumper back to pins 2-3, connected AC power & powered on, still beeps.
4. Repeated the some of the above with moving the PASSWORD jumper from pins 2-3 to pins 1-2.
5. Disconnected AC power and CMOS battery for 15 minutes, reconnected and powered on, still beeps.

I tried most of these with and without a USB flash drive plugged in--Used RUFUS to create a bootable USB drive ( FreeDOS, FAT32) and dragged the A06 and A14 .exe's onto it.

Some instructions say to disconnect AC when moving the CMOS jumper, others say to not only connect AC power but also power on the machine. Some other instructions also talk about moving the PASSWORD jumper.

.... What's the actual sequence of events I should have tried?

Is there any other way to recover from a failed BIOS update or do I have a $1,200 paperweight?

I immediately regret listening to the SupportAssist to update the BIOS. In searching the form for troubleshooting tips, it seems unacceptably common for a suggestion to brick peoples motherboards (if this wasn't human error on my part).

If the manufacturer's SupportAssist is going to recommend an operation that could turn your computer into baked potato, it should really come with a giant red warning, "HEY MAYBE DON'T DO THIS, BUD?" -- again, if this wasn't human error (other than naivety).

I'm going to have to buy another computer, aren't I? Or at least a new motherboard?