hardware diagnostics

I was trying to diagnose an issue on my cMPro 5,1 with howling fans that turned out to be bent pins on the backplane. As part of trying to debug, I failed to be able to invoke diagnostics. I set the startup volume from EFI OCLP to Mojave and tried booting with Depressing "D" Depressing Opt-Cmd...

What hardware monitoring tools do you use for you m1,m2 macs? I was trying to see if there was something as granular as HWInfo, but for mac? What options are available that are also free? Thank you.

Does anyone know if the hardware diagnostic test has changed in MacOS Big Sur? When I restart my machine and hold the "D" key, it appears to send it into recovery mode.

(MacBook Mid 2015 15”) So last night while rendering I took a look at my Mac and saw that the MagSafe LED is not on at all and it’s also not charging. It was still on 100% so whatever happened had just happened. I suspect something overheated or so since the fan went crazy fan and the Mac got...

I'm at a bit of a loss as to what is wrong with my mid-2012 15" MacBook Pro Retina (i7, 16GB RAM, Intel & Nvidia GPU). This will be a bit of an essay so bear with me! Background Bought in September 2012, had logic board and GPU replaced under Apple Repair scheme due to faulty graphics. Also...

So today I walked on my 2011 iMac having a blue screen, like on that laptop, after reset I got a that screen with yellow stripes. Google it a bit, but couldn't find anything useful, at least other guys with similar issue got apple logo, I don't even have that. Can't boot into hardware test...

Here's a new one?: A few months after successfully deactivating the AMD chip and using the Intel one, I ran a command-D hardware diagnostics to check memory. (check reported a bad chip with both inserted on extended testing but testing each one individually in either slot reports both SODIMMs...