[NAME]​ I did yet ANOTHER clean install booted from my USB drive, including new partitions and drive formatting, after my apps like mail, notepad and calculator quit working. I also installed all the critical and relevant Dell drivers. While not someone inclined to crack open a computer, this was just too aggravating to live with, I purchased a 16GB memory module and installed it, replacing one of the two banks of 8GB memory. After all of that I still got a blue screen!  I decided to see if there was a memory integrity test, and lo and behold, Windows 11 has a Windows Memory Diagnostic App. As soon as the app started running it said I had a hardware issue. After rebooting I took out the remaining 8GB of memory from the original build and ran the test again, this time there was no problem detected. I took the 8GB module I had originally removed and replaced the one that remained and ran the test again with the result showing another hardware problem. Essentially, both 8GB modules were cooked. I tried reseating them to ensure that wasn't the issue before running the second test, so it is confirmed the modules were either defective or damaged, perhaps during a power surge. The other thing that reduces the chance that it was the memory card becoming unseated is the fastening mechanism: two pretty robust spring fasteners that hold the cards on each side. Once in place, those memory cards aren't going anywhere.  All that to say, problem solved. I purchased a PNY 8BG card to go with the 16GB card I purchased, so we're comfortably and reliably at 24GB of memory. Life is good.
Regards to my 2020 Dell 5400 AIO, per the support page located at [URL] I have experienced numerous blue screen shut downs since last fall, just as my warranty expired, of course.  I've pretty much pulled out my hair trying to resolve. I started with W10, then after upgrading to W11 the problems started. Recently (this morning) did clean install of W11 on a freshly formatted partition, updated the BIOS and all critical drivers, reboot, and aside from being dirt dog slow, I get four blue screens spaced ten minutes apart. Finally, after some digging came across the Windows Diagnostic tool that identifies a hardware problem Further searching reveals a known issue with the 2666mhz ram being used in these models. Question is, does the RAM wear out with use? PC was purchased in fall of 2020. I have HP's that are doing great at 8 years old. If I replace my RAM with the same thing, will the problem persist? Do I need to upgrade to a different type or speed of RAM? Will reverting back to Windows 10 eliminate the proble? Here's the Win Diagnostics file, if it means anything to anyone. All I can say is that I'm about ready to donate this boat anchor and go back to HP.   Log Name: SystemSource: Microsoft-Windows-MemoryDiagnostics-ResultsDate: 1/17/2023 10:09:11 AMEvent ID: 1202Task Category: NoneLevel: ErrorKeywords:User: SYSTEMComputer: RolfsenOfficeDescription:The Windows Memory Diagnostic tested the computer's memory and detected hardware errors. To identify and repair these problems, contact the computer manufacturerEvent Xml: [URL]">    1202  0  2  0  0  0x8000000000000000   2054    System  RolfsenOffice     [URL]">  Fail    
DELL: MEMORY MANAGEMENT error be caused by DDR4 2666MHz memory modules