boot device not found/ SSD is not detected

[Hassoni]

so i woke up today and my pc is not working it had a screen that said boot device is not detected install boot device on hard disk which is weird because i have windows 10 on my m.2 which is in my pc right now and ive checked on it a few times and its fine, so i went into bios to check on it and my m.2 was not being detected, so then i grabbed an USB drive that had windows and ran diognostics, everything is fine, so i ran more diognostics in the hp thing all passed, it was working perfectly fine yesterday

my problem is that my m.2 is not detecting so please help

[Prométhée]

Hello

this is a recorded response (macro))
we need the exact model of your computer, and the product number
To find it follow this
for a desktop computer

HP Desktop PCs - How Do I Find My Model Number or Product Number? | HP® Customer Support

and for a laptop:

HP Notebook PCs - How Do I Find My Product Name or Number? | HP® Customer Support
Give the full version of windows
for windows 10 type winver in the search box

[Hassoni]

Product no. 4gp41ea#uuw

Model no : 880- 100no

[Prométhée]

check this

3F0 boot device not found error displays on a black screen in Windows 10

first tested this

HP Consumer Desktop PCs - Boot Device Not Found (3F0) or Automatic Repair Errors

Procedure 2: Ensure Legacy Support, under Boot Options, is DISABLED

[Hassoni]

already done everything like that,  even tried to talk to the virtual asistant, and its not working, the problem is not that ist not working, its that its not showing up that i have an ssd

[Prométhée]

Sorry, but if you have tested absolutely everything, there is nothing more I can do for you!
Either you have a step not taken.
Or it is likely that the SSD is faulty

[itsmyname]

>  i went into BIOS to check on it and my m.2 was not being detected,

That is a strong indication that the M.2 is failing, at least intermittently.

> i grabbed an USB drive that had windows and ran diagnostics, everything is fine,

Strange that the diagnostics "found" the M.2 device -- if it is intermittently "not responding", the M.2 needs to be replaced. 

If you boot from the USB drive, and the M.2 is detected, then COPY EVERYTHING (Documents, Downloads, Pictures, Videos, Favorites, Desktop files/folders) that you can, before the M.2 is PERMANENTLY DEAD.

> so i ran more diagnostics in the hp thing all passed,

Note that a disk-drive (spinning or SSD or M.2) can physically be fine, i.e., diagnostic programs can "exercise" it -- read and write tests --- while the file-system is logically a mess.  For example, the first few files that are loaded from the disk-drive when you "boot" Windows, have been overwritten or deleted. Compare to a steak-knife that physically looks OK, but it is in definite need of sharpening, to work as smoothly as it was logically designed to do.

Note that free software, such as "Macrium Reflect", if it can read from the M.2, can "clone" the M.2's contents onto an empty disk-drive. Then, replace the M.2, and "clone" back to the replacement M.2 from the copy.