Win10 installing, entered a PIN, bricked

[Beldar]

I just got a T510, it's bricked, for now.
Sequence:
came from eBay with no OS on a 500gb HDD
powered up to textual DOS-like screen
powered down, put on charger overnight
took off charger
installed SSD, booted to BIOS
removed password need in BIOS, Saved
while still looking at BIOS, it beeped and powered off
it wouldn't power on
battery dead? plugged in charger
restarted with Win 10 1909 .iso on optical
Win 10 proceeded to install
finally it asked for a PIN, put one in
died/went dark/won't restart
optical drawer won't open
seemingly bricked
read web info about this:

Use the power button to restart your computer three times. This will start the Windows Recovery Environment.
https://answers.microsoft.com/en-us/...2cb149b?auth=1

the power button 3 times did nothing
removed battery, still plugged in, still no power

THOUGHTS? Bad AC adapter? Bad CMOS battery? Something I inadvertently did in the BIOS?

[axur-delmeria]

Symptoms point to a bad charger. Hopefully it's just that.

[Beldar]

I tried starting it with the drive removed, no go. The charger from my old Dell Inspiron 3520 is too small.

[TPFanatic]

May be best to return it.