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Windows memory diagnostic didn't detect any errors. Is memtest86 still worth running?

My build is about 2 months old (not all parts are new), it worked perfectly for the first month and a half and for the last few weeks has been constantly crashing. When it crashes it typically quickly loops the last sound that was playing and makes a sort of buzzing noise. My Specs are an AsRock B550 Extreme4 (Brand New) Ryzen 5 3600 (Brand New) G.Skill Tridentz RGB 3600Mhz 32g kit (Brand New) (slots 2 & 4) Sapphire RX 580 (not new) EVGA 750 G2 (not new) More info about storage drives in the msinfo32 dump Windows 10 x64 Oct 2020 (installed fresh in december) Dumps are in the attached zip but the message on the BSOD is often different than the last time. IRQL_NOT_LESS_OR_EQUAL happens a lot. I'm using the stock cooler but temps have never gone above 70. What I do on the computer seems to not have a very strong effect on when it crashes. I had the ram at a 3600 xmp profile, I've moved it down to base speed but it hasn't made a difference. I work in IT support but know very little about DDR4 XMP, overclocking, or modern ryzen processor specifics. I've tried updating every driving I can think of, repairing windows in all the various ways I know how, and I'm somewhat out of ideas. I assumed it was software / drivers since it worked so well at first but it could be a RAM problem? I won't be able to test any solutions for 6 hours or so but I appreciate any suggestions anyone has. I've attached the dump as specified in the BSOD post, but the perfmon thing wouldn't finish. SysnativeFileCollectionApp.zip

I got it to work by doing nothing that made sense and randomly switching between setting the res in Radeon & Windows. Still no real solution, but it works now

Or alternatively, can I get active display resolution to match the 1920x1080 of the Desktop Resolution

I've figured out why (somewhat). It's because when I clone the displays, it changes "Active Signal Resolution" to 4k even though the "Desktop Resolution" is at 1080. It actually refuses to Display 4k at 60Hz, but it will at 59, and I guess that's why it's forcing the change. Is this because of the HDMI cable? It's an old cable, if I buy a newer one will it support 4k at 60Hz?

I have 3 monitors running off of a Radeon RX 580 on Windows 10. 2560x1440 (native) at 60Hz (Display Port) 1920x1080 (native) at 60Hz (HDMI converted to DVI) 1920x1080 (4k Native) at 60Hz (Television via HDMI) I bought the TV new at black friday, (cheap and chinese, so the scaler and supported frame rates is probably pretty limited). Normally I mirror what's on my second 1080p monitor and the TV. However, even though they all run simultaneously at 60Hz, when I clone monitor 2 & 3, the TV switches to 59Hz, which the TV itself is incapable of displaying (or at least it refuses too). The 2nd monitor remains at 60Hz. This is really confusing, where I would normally change the refresh rate in device manager, you can't do while you have the display cloned, and I already have the correct refresh rate set before I start cloning. I tried Custom Resolution Utility but it doesn't look like you can set custom cloned resolutions (unless I'm missing something). Also the AMD Radeon settings, doesn't let you set custom resolutions on cloned displays. What do I do and why does it switch frame rates like that?