TL/DR: I think I fixed my laptop crashing issue. The power brick was the culprit.
A little more:
My Dell laptop computer is less than a year old. Windows 11 is the OS.
Tabs, browsers, and even the OS frequently crash on me, disrupting thinking, writing, typing. I’d end up clenching my jaw and swearing on so many days. I had to remind myself to save, save, save work lest I lose it from a crash.
Gmail was the worse but only marginally so over SFGate, BlueSky, Canvas, Facebook, Amazon, the NY Times, Daily Kos, financial sites, ESPN, and WordPress. The crashing also took down Word. It happened with every search engine I tried, and every app I used.
The net crashes happened in every browser. I tried incognito, private, and stealth modes. Same results. I turned off ad-blockers, encryption, VPNs, firewall, anti-virus.
Things still crashed.
I ran diagnostics. Chip test and ram tests. Keyboard, processors, etc.
No problems found.
Researching, I disabled all extensions. Cleared and cleaned caches. Disabled graphic accelerators. Close, opened, shut down, rebooted…uninstalled drivers, reinstalled drivers, perused forums, reached out to Dell, Microsoft, Firefox, Google…more. I closed tabs and kept fewer tabs open. The crashing continued.
Meanwhile, I took my laptop to the coffee shop. I often wasn’t plugging in there and realized, I never crashed there while I wasn’t plugged in.
Yesterday, I went back home and recharged my laptop. Booting up with the laptop plugged in, I opened a browser. Went to NYTimes since it’s a known crasher.
Crash.
I unplugged.
Completely stable. I opened all known offenders.
None crashed. I opened ten tabs, eleven, twelve.
Nothing crashed.
Plugged in the power supply.
Crash, crash, crash.
Unplugged again and operated the rest of the day without any crashes.
I thought, maybe it’s the house wiring or my network. Then I remembered: I was on vacation last week. Stayed in two different hotels and crashed there. So — not my home setup or environment.
I’ve ordered a new brick. It’ll be here next week.
We’ll see how it goes. I’ll let you know.
Michael Seidel, writer 
Well, at least you know part of the problem, can you just run it witout the power supply? Or whatever the supply is, it could br that and if so, why bother with it? I’m not computer literate to that degree, but it would seem that if it crashes with A then A must be the culprit in some way…
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Yes, exactly – must be A, and A is the external brick that is the power supply. Disconnect it, all runs fine. So, I charge the laptop, then disconnect it and use it. The problem with that routine is that a matter of inconvenience; I tend to type/write/read for hours, and the charge is only good for about 3.5 hours. *smile*
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