New SSD will not boot

[noof]

I recently installed a NVMe SSD and it worked fine until I deleted the partitions in the original SATA HDD to turn the disk into data storage only. I was happily working along and decided to restart the computer.  I got a blue "boot device not  found please install a operating system on your hard drive" error and was not able to get the BIOS working with the Windows Media USB Device. The computer has the most current Windows 10 build completely updated. I am fairly certain I have the most current HP BIOS as it just updated.

I need instruction on accessing and setting the BIOS to boot from the new SSD with Windows 10 on it, please.

[itsmyname]

@noof -- when you power-on the computer, repeatly tap the ESC  key, until you see a "boot menu".

Choose to boot from the USB containing the Windows Installer.

Instead of choosing "install", choose "repair", to see if it can repair your "boot" settings.

[VH2000]

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@noof wrote:

... it worked fine until I deleted the partitions in the original SATA HDD 

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This was a fundamental error. I don't know how you deleted your partition but probably you need a new EFI-Partition.

[noof]

Thank you for your response, but I did all of that several times. I believe the problem is tied to trying to use both the SSD and original HDD.  Even though the entire operating system was installed on the SSD and the boot settings set to boot from the "hard disk", I could not get the computer to boot. You have to understand...I have installed and reinstalled the OSA multiple times.

[noof · Accepted solution]

Thanks to all who attempted to help, but I am just going to ignore the original HDD. It does not even show up as a device after having reinstalled Win10, but I hear the system booting from the original HDD and not the new NVMe SSD that has the OS on it.  It is just not worth messing with anymore. I wasted a bunch of time trying to get the old HDD usable as a data storage disk.. I just use the PC for home business, reading my newspapers and blogs, and playing my music throughout the house. With the advent of all the cloud storage options I have...screw the SATA HDD. I have a really fast computer for ALL my needs now.

[itsmyname]

@noof -- Windows creates a tiny "boot" partition, and your computer boots from that partition.

The contents of that partition list the other partition(s) that contain the rest of the Windows operating system.

In theory, this allows "multiple boot" configurations, e.g., Windows 10 on one disk-drive, and Windows 11 on another disk-drive.

If you do something "bad" with that tiny "boot" partition, you can mess-up the boot process, to cause it to fail.

On another computer, download, install, and run the free Macrium Reflect software.

One of its options is to create a bootable DVD-recordable disk that you can use.

Boot your non-functioning computer from that DVD, and you should get a graphical display of the various partitions on your HDD and on your SSD.  

Use your smart-phone to take pictures of that display, and post the images here.

[VH2000]

It must be very clear:

You have to disconnect the HDD-Drive when you install an OS on the SSD!

(otherwise you have 2 bootentries in your HDD)

[noof]

Thank you for your help, but I have taken the machine apart too many times, reinstalled the OS and programs (apps these days I guess) with all the time involved and I just don't need the HDD enough to mess with it anymore unless Windows 11 will work properly on this All-in-One that was free to me to from prior to upgrading it. It does boot, apparently, from the HDD because I can hear it, but from there on I am working from the 2 TB NVMe SSD and the machine works perfectly. The old HDD does not even show up on the My PC devices window in the explorer folder, so I can work along happily and no longer use the old drive for anything other than the startup. Thanks again and happy holidays to all who tried to help.

[VH2000]

You will not see it in the explorer, because you deleted the partitions.

Just rightclick on the Startbutton and click on "run"

Here you type in diskmgmt.msc

and you will see everything you need

Rightclick on unallocated (black) and select new volume and follow the steps

Then you will be able to use it as storage drive

You probably have s.th. like in the pic