Quote Originally Posted by WarcraftPundit View Post
I'm not familiar with this at all. I do understand the concept of course but just haven't had any experience with this particular one.

I found this with a bing search: https://www.guru3d.com/files-details...-download.html

I'll download it and try it when next I have a while away from the PC. I should be away in the morrow for about 7 hours, I presume that would be long enough.
The official site is https://www.mersenne.org/download/#download but that should work. It just exercises your CPU cores and RAM such that if you have bad memory or flaky devices due to poor power supply output or some other flaky hardware or a terrible heatsink setup, it'll fail the test and report an unexpected result. Or it'll BSOD. Or overheat. Watch it for 15 minutes or so and if the thermals don't climb past 65-70, it should be OK for longer tests.

Something to add to the power supply comment above is that if you stack a bunch of devices up on the same rail e.g. 4 HDDs on the same SATA cable bundle, etc. sometimes that will overload just that rail and the associated outputs. Your manual will usually describe which rails are common and how much they're rated for, though being a Dell, maybe not as I don't think those are modular.

The "common" thing also applies to PCI-E SSDs and SATA ports, depending on the motherboard. Some of my MB's SATA ports for example become unavailable when I connect a PCI-E SSD on one of the M.2 ports. This usually results in a simple failure to enumerate the affected SATA ports, but I can't speak to other shenanigans that might happen if you accidentally comingle those.