Everything began when my laptop (MSI PS63 Modern) went on being stuck in a BIOS boot loop back a few months ago. From what I remember, it happened after a BSOD where windows got frozen during the automatic repairing of that crash. I waited a few hours hoping I wouldn't have to force the system down but had to do it ultimately.
I recently tried to fix the Windows booting issue, unsuccessfully. To resume what I tried few days ago :
Unable to access WindowsRE
Reset the factory setting in BIOS and checked boot order
Using a Windows Installation Media bootable key, tried the Windows Automatic Startup Repair which failed, tried to install a new OS with custom install on C:\ drive which failed and exited to a bios loop again.
Using Command Prompt, tried "Bootrec /fixboot" but access was denied, even after the "common trick" of assigning a letter to it partition and copying bootfiles from C:\ to the EFI partition
Tried rebuilding BCD
I abdicated and saved users data in another drive with a view to format the whole SSD to do a Windows clean install. Unfortunatley, was unable to wipe it and I used all the common methods I knew which were :
Tried through Command Prompt from the USB flash drive, using diskpart. It seemed "clean" and "delete partition" or "delete volume" commands denied access. Tried to override them which seemed to work at first, but didn't when listing partitions again, even after restart.
Tried to boot through Lubuntu OS on USB drive, but KDE Partition Manager didn't do the trick either.
Finally I phisically removed the SSD from laptop to plug it in another PC, hoping Windows Disk Manager or any other (I tried miniTool) would manage to wipe that SSD down. But even trying to fill all sectors with zeros won't work, even if miniTool seems to accept and start the process, after which it calls it a success and display my old drive as it was before.
I ran a surface test which turned out to be good.
I suspect that this drive has been protected by Windows during BSOD repair and won't let me access to any writing, but even after running an attributes disk clear readonly on diskpart, nothing wants to be deleted on that disk. Seems i found the most undeletable data of all times (and to think that I was worried about data loss at first is quite laughable --')
I never encountered such a problem for such a simple task. I've tried all the basic tutorials I was able to find on this subject. I feel quite a bit of desperation and don't know what to do next... Any help would be much appreciated.
PS : Sry about the length and poor english. Here is a CrystalDiskInfo of that drive and a DiskGenius formatting attempt:
But even trying to fill all sectors with zeros.. never do this with an SSD. It is not anything like HDD.