Can Apple's Mac Resource Inspector (MRI) on GXS system find all hardware faults?

[Oliviashortshort]

Hi,

My mac mini is extremely slow, it was sent back to a Mac certificate agent to test.
They said they did the Mac Resource Inspector (MRI) on GXS system but found no fault.

However, I did some research and also been told by someone that it is very hard to found faults specially when it is an intermittent fault. Also, someone had ran the test and found no fault but took and ram out to test on another computer separately then found the fault within the ram.

Has anyone know for certain whether the 'all parts' of the hardware are healthy if the Mac Resource Inspector (MRI) on GXS system says there is no fault found?

Thank you.
Olivia

 

[RyanXM]

If MRI doesn't find a fault, there is more than likely not one. The cases where I've seen this not be true is when a HDD is dying. Sometimes the SMART status is not showing a failure, even though the drive is dying. The other cases are when a graphics card is starting to fail. Unless it is really pressed, MRI won't find the fault. MRI is a very quick check, like raising your hand in class for attendance.

The better thing to run, depending upon the year, is both the EFI and OS based Apple Service Diagnostics (ASD). If there is a failure that is intermittent, EFI or OS "SHOULD" find it. I've run tests on machines for 24 hours without a failure but as soon as your boot into the OS, it will shut off or have a Kernel Panic. I would ask them to run deeper diagnostics to see if there really is an issue.

 

[Oliviashortshort]

If MRI doesn't find a fault, there is more than likely not one. The cases where I've seen this not be true is when a HDD is dying. Sometimes the SMART status is not showing a failure, even though the drive is dying. The other cases are when a graphics card is starting to fail. Unless it is really pressed, MRI won't find the fault. MRI is a very quick check, like raising your hand in class for attendance.

The better thing to run, depending upon the year, is both the EFI and OS based Apple Service Diagnostics (ASD). If there is a failure that is intermittent, EFI or OS "SHOULD" find it. I've run tests on machines for 24 hours without a failure but as soon as your boot into the OS, it will shut off or have a Kernel Panic. I would ask them to run deeper diagnostics to see if there really is an issue.

Thank you so much Ryan. Cannot believe I have got a constructive and clear answer so quickly! Really appreciate it! I will be able to have a further conversation withe them. Thanks.