Question Boot loop after changing some BIOS settings ?

[iisthphir]

I just built a new pc a week ago, installed Windows and used it for a few days.
Then I went into the bios to turn off SPD write disable so I could hopefully do something about the annoying rainbow happening on my ram and while I was in there thought I would see if the xmp profile would work.

I exited the bios, it turned on with the motherboard's amber DRAM light staying on, doing its thing, then it restarted again and tried to boot Windows. It tried for 20 seconds or so and then a blue screen with the error "Storage Device Inaccessible ".

I guess a parts list is probably necessary:

MBD: Asus Rog Strix Z790-H Gaming WiFi
CPU: i9-12900KS BX8071512900KS
RAM: Trident Z5 64GB F5-6400J3239G32GX2- TZ5RK
SSD: Samsung 990 Pro 2TB MZ-V9P2T0BW
CPU Cooler: Phantom Spirit 120 SE ARGB
PSU: Corsair RM850x

So of course, the first thing I did was turn xmp back off but that made no difference. I reset the cmos multiple times, made no difference. So I thought that since it happened after turning on xmp it could be something wrong with RAM since that can manifest itself in many different ways, so I have tried ram sticks one at a time in a2 slot and ran memtest86 with 0 errors and no change.

So then it seemed most likely it is the motherboard since the ssd was working fine and shouldn't have anything to do with the settings I changed.

When it restarts after failing to boot it starts the Windows Recovery so I tried to use diskpart and chkdsk but they do not recognise the drive is there, giving various errors. When I boot the usb drive I installed Windows with its the same, also when it gets to the drive selection it says " We couldn't find any drives ".
When it posts it doesn't say there is no disk but when it try to boot the green-yellow light stays on for several seconds.

I would upload pictures of all these screens but for some reason it won't let me.
So then I tried various things in the bios, first of all in the boot settings it shows: Windows boot manager on the ssd, as well as listing the uefi usb installer. Under Intel rapid storage technology it lists: intel rst 19.5.0.5676 rst vmd driver
Non raid physical disks:
Pcie 1.0: Samsung ssd 990 pro 2tb...
Nvme controller and drive information lists:
No nvme device found
Ssd secure erase lists nothing.
The temperature monitor lists nothing from the ssd whereas it did before this happened.

If I use the EZ Flash 3 utility it let's me look through all the directory structure on the ssd drive's 3 partitions, 96MB boot partition, 553MB recovery partition and the 1607056MB Windows partition.
The remaining space is unallocated as I was going to use it for a different system.

I tried setting boot sector recovery policy to automatic and all the different secure boot settings, nothing works, I haven't tried turning CSM on because I can't, as I understand it is because I am using integrated graphics.

So I would think the ssd has died but it can't be dead if I can access the file system, I can't see any reason it should have been affected anyway.

If anyone has experienced something like this or thinks they know what the issue is I would very much like to hear it, thanks.