I installed Win 11 in a 730x recently and had no BSOD issue.  I had been running Win 10 in 730X for a long time and never had issue.  Dell thermal control and AlienFx work in both 11 and 10. so I think intrinsically this model is stable if you have Dell bios 1.0.0-1.05 (latest).  If you had flashed to custom bios A11b to support Xeon or gulftown 6 core cpu then I do not know how it fares in Win 11.  I do know many users who flashed to A11b run stable Win 10 for a long time, provided you are not using high speed high capacity memory.  I think 12 GB (or 24 gb using some memory) is the max it can support in Win 10. Re: memory integrity test failed it is possible your memory has failed which has nothing to do with Win11.  try remove all three memory chips and use a single spare working DDR3 to test system stability in Win 11.
Hello, I have a Dell XPS 730x that I was running Windows 10 Home on and very recently Windows 11 Home (unsupported just for fun). On both operating systems, I would hit the Blue Screen of Death very often as in every time I use it. I let it sit for 10 minutes and it will go to BSOD. I am aware that I cannot complain about this when running Windows 11 unsupported, but since I get the same amount of times as in Windows 10, I thought I might ask if anyone has an idea of some steps I can take to troubleshoot please? I have run system diagnostics which gave me the error code 2000-0123 because the memory integrity test failed. Some of the stop codes in the past included CRITICAL_STRUCTURE_CORRUPTION, IRQ_LESS_NOT_EQUAL, and MEMORY_MANAGEMENT. Any help would be very much appreciated! Thanks in advance.
XPS 730x, Windows 11, BSOD very often