Voice recognition doesn't work (Windows 10)

Thank you again, and again.
-About the computer model: it says PC Notebook HP - 15-dw1019ns
- About Cortana: yes, Cortana understands me, and my words get well written at the bottom of the Cortana frame.
- About Win+H: O.K. I'm not confusing that with SpeechRecognition. Win+H is meant for short commands to the computer, while Speech Recogn. is for extended dictation. Still Win+H supports some substancial dictation, and yes on the email application too. But it lacks the possibility of training for more accuracy, and other options; that is why I keep trying to restore the other, the full Speech Recognition.
- About my Windows build: it is HOME (sorry about this being missing in my profile, I will update it). And, yes, it is the very same I had in my old computer, where Speech. Recogn. worked well.
ACA

Thanks again. I feel overwhelmed that you are trying so painstakingly: even enlisting
other people’s knowledge!

I’ve been unable to update my profile in this forum. So here is the data:

For the computer I find this (in Spanish, because I am from Madrid):
Notebook HP – 15-dw1019ns
Núm Producto 7ZJ76EA#ABE
Núm. Serie CND936475B
And this:
F5B7C2312A8B

Sistema Operativo de 64 bits - Procesadpr Basado en x64

For Windows I have this: WINDOWS 10 Home - Versión 1909
Versión del sistema operativo 18363.778

I’ve tried your suggestion and created a new user for the computer; then I accessed it with that identity and something changed: in Speech Recognition I was able to perform the stage “Training the system to become familiar with my speech”, the
whole of that long exercise (of which I could never do anything at all accessing with my usual identity). But then Speech Recognition only typed the first 3 words of my dictation.

The Win+H function performs a little better, but it’s erratic: sometimes it works and sometimes it doesn’t and there’s no way to know why.

I’ve also got help from Microsoft Assistance online through chats with a couple of agents. They had me install Windows again (not the deepest sort, for my applications and files were left untouched); but that has improved nothing.
So one of them suggested doing a downright ‘Clean reinstallation’ of Windows; but I am reluctant to tackle that –would
you advise that serious treatment?

One other concluded that the hardware, the computer itself, must be to blame. But that sounds unlikely to me
since all other sound functions perform well (Cortana understands and even types what I ask, the Win+H tool also types, and even the Speech Recognition app has written some words) –would you say that the machine can be the faulty part
in all this?
Thanks again.
ACA

Thank you, Compumind, for your suggestions and your links. I’ll certainly visit them.
--------------------------------------
And thank you again, Dalchina. Sorry I confused you. The timeline is this:
- I began to try Sp. Recogn. a few days after purchasing the computer, not caring about Windows at all; I never questioned that the Windows 10 that came preinstalled would be a good version for that function and all others.
By then, I had installed myself the ‘Office10’ suite, an antivirus (Panda, which I've had for decades in my other computers) and little more. I assume that none of those would interfere with the Sp. Recogn. of Windows.

- Then, only yesterday, one of the Microsoft agents, in an assistance chat, instructed me to activate this link he sent me: what you quote as "lastly even reinstalled my Windows 10"; and that was not a ‘Clean installation’ but a repair reinstallation of some sort, that left untouched all my programs and files (I understand a ‘Clean Installation’ does away with all that, as it kind of formats the computer).

- Later yesterday, when that did not solve the problem, another agent in the chat suggested I let him do me a real ‘Clean installation’ (or send the proper link to start that). I asked for more time to answer, for I fear that operation will cause deeper damage to the computer.

- My question to you now is this: the “clean boot” you advise me to try, is that the same thing a ‘Clean installation’ of Windows? If it is the same, I'd be reluctant to undertake that; but if it'ssomething less consequential, then yes, I'm willing to try it if it offers some hope towards solving the Sp. Recogn. issue.

Finally, thanks for the link to Windows Central; I didn't know about them, but it seem very useful.
ACA

Thanks. Exactly. I did the same and landed on Windows Central. I've printed the whole sequence. Wonderfuylly clear.
But long too; I cannot tackle it just now (other work to do). But I plan to perform that (which clearly is not a 'Clean Installation' of Windows, I understand) when I have some free time in front of me.
Thanks

Hi
I have windows 10 1909 home - and found this link
https://www.techwalla.com/articles/h...while-you-read

And followed the page instructions and got it to work on my notepad