[NAME]​ If the $2 CR2032 battery does not work and you proceed with the PSU swap the XPS 8930 PSU is standard ATX format, so many 3rd party options are available. Consider a fully modular PSU that is no longer than 150mm. Anything longer than 150mm will begin to encroach on your cable management space. This is a 140mm long 850 watt fully modular Seasonic Focus
I recently upgraded the SSD on my XPS 8930 desktop and since then I have been experiencing seemingly random reloads due to - Event 41 Kernel-Power ‘The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.’  Current spec – XPS8930, Core i5 8400, 16gb ram, primary SSD – 2tb ‘Dell M.2 PCIe NVMe Gen 3x4 Class 40 2280 Solid State Drive’ , secondary SSD – 1tb sata.  Previously the PC was running an optane setup with a 32gb SSD, so when I installed the replacement m.2 SSD, I switched the mode from RAID to AHCI in the BIOS and also upgraded to Windows 11.  The old primary drive has become the secondary SSD.  The reload is very quick and sometimes happens several times a day, but also can go several days without occurring.  Subjectively I would say it is most likely to occur a minute or two after coming out of sleep or startup, though I am not certain this accounts for every occasion. Diagnostic test produces the following ePSA 4306.25 warning -  PCIe - Training error PCI tag-0100 VendorID-10DE DeviceID-1C82 SVid-1028 SDid-3512 Bus 01: Link Degraded, maxWidth x16, negWidth x8, PCIe Slot 01  Which is the SSD I think, but I didn’t run the diagnostic test before the upgrade.  Any assistance in progressing/resolving this issue gratefully received.  Stephen  
XPS 8930, randomly reloading following upgrade