IRST errors on Windows 7 x64, MS-16F4 (SOCKET 0) RAID0. Successfully reinstalled

Perhaps I’ve misunderstood you. I’m fine changing the SATA mode, but I thought your instructions were to NOT use raid . . ?

Yes, that has been my proposal.
Your laptop is obviously not able to manage the usage of 3 storage drives properly, especially not in RAID mode.

Yet it’s running fine. IRST just shows an error, I’ve actually avoided IRST and haven’t had any errors, i’m being cautious.

You’re confident that there WILL be issues if I continue like, uninstall IRST, but leave the driver as is?

Since I have never had a SATA configuration like your present one (1 Intel SATA Controller, trying to manage different drives running in RAID and AHCI mode simultaneously), I don’t know, what happens, if you uninstall or don’t run the IRST Software.
By the way: The IRST Service software is running in the background, unless you disable it.

As we delved into this, it seems to have been forgotten that IRST WAS running fine. No errors, RAID transfer speeds weren’t an issue.

The solution was (somewhere in the vicinity) of the Intel forum post I posted earlier.

As you can see >here<, the RAID may be accessible and work while showing the Intel SATA AHCI Controller within the Device Manager, but not stable and not for a long time.
There must be something wrong either with your SSD/HDD configuration or with the BIOS.

Am I to understand you as saying:
1. I can’t run RAID alongside 2 x HDD’s in this system, period?

And the double adapter (for 2x mSata into 1 Sata port) makes no difference?

@Morgs_B :
What I wanted to say is, that your laptop has not been designed for your current SSD/HDD resp. AHCI/RAID configuration.
By the way: mSATA ports are working different than SATA ports.

Ok, yet not being designed doesn’t mean it can’t run.

I don’t have any mSata ports, only Sata ports. The 2 x mSata go into a double adapter which plugs into a Sata port (as per shipped).
The Media drive is in place of the DVD, and the SSD is where it’s intended to be. So the only thing I’ve done different than intended is replace the DVD with a drive (assuming that running the mSata as media drive, not Boot drive, is much of a muchness).

Yes, but your system is obviously not running properly with your new configuration.
The best way to solve your problem is to ask the manufacturer of your laptop for help.