Windows 10: Reinstalltion from USB with downloaded installation media fails

I inherited a Dell Inspiron 14 laptop with Windows 10 installed and no password. I attempted to reinstall windows using the installation tool downloaded from Microsoft. At the log-in I restarted the machine with the shift key depressed, and it boots to the USB, requests that I install media. I unplug it and plug it back in. The machine responds with the message, "The media inserted is not valid. Try again." I do so. Download the installation tool again, and use it to again to prepare a second USB drive. Same failure.I also had a Windows 7 box tha

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Installation media boots to command prompt

I've just booted from known working install media to see exactly what it does when booting. The sequence of events is...

1. Windows logo on a black screen
2. circling dots appear beneath the logo
3. light blue 'Please wait' screen with circling dots
4. a command prompt window (very briefly)
5. the initial Setup page appears

Do you see steps 1-3? If so, it appears you have stopped at step 4, suggesting that something on the disc cannot be read.

Does the disc boot properly in another machine? If so, try cleaning the laptop's drive lens then try booting from the disc again.

If not, make new install media with Microsoft's Media Creation Tool, either as a bootable USB, on an ISO that you can burn to another disc. At Step 8 in Option One of this tutorial you can choose between making a USB or an ISO.

Download Windows 10 ISO File

 

KB4025339 Fails Install 0x80070564

Thanks
I am trying Eagle 51's suggestions now. Windows Update troubleshooter found a bunch of errors and fixed all but one.The update is trying to download KB4025339 again. I'll see what happens. At step one troubleshooter finishes with one error unresolved "Potential Windows Update Database Error Detected-Not Fixed". Windows update stalled at 0%.

At step 2 same troubleshooter error. The KB finished a new download failed to install.
Did step 3 KB has downloaded but fails to install.

If Eagle's suggestion doesn't work I'll try EdTittel's suggestion

Tried bothe Eagle & Ed 's suggestions - do not work. Anyone else?

I have noticed that the latest update for my nvidia drivers has failed to update. Wondering about that!

 

windows 10 Installation media disk

Hi Shaela,

To create a Windows 10 recovery DVD or USB, we suggest that you download and use the media creation tool from the

Microsoft software download website. To create an installation or repair media, follow the steps below:

• On a working PC, go to the
  Microsoft software download website.
• Download the media creation tool and then run it. You need to be an administrator to run this tool.
  
• Select Create installation media for another PC.
• Choose a language, edition, and architecture (64-bit or 32-bit).
• Follow the steps to create installation media, and then select Finish.

If you need further assistance, please do not hesitate to send a reply.