Excellent. That was what I was hoping for - that the true Administrator account was not set.

Be well!

:D

Can't hurt to try! Seems logical to me.

:nerd:

Hi.

Perhaps a bootable Data Recovery software would be of use here, just to get the files off.

Worth a shot.

:think:

Hi there!

Welcome to Windows Ten Forums.

Yes, you have a real dilemma on your hands.

You are probably Administrator (administrative rights) of your system with a Local Account.
Do you have...

Thanks.

:nerd:

Yep. Those rounded corners, lol.

:roflmao:

:thumbsup:

You can do this if you follow all the instructions - plus there are others here that can chime in.

To recap -

1) Do a Quick Format on the USB Drive in exFat - no volume name needed.
2) When...

No worries! Glad to help.

Get them to throw it in as part of the deal, if you can.

Let's see if you can do the install yourself.

:D

Do you have any final questions, before I run?

Hopefully, all should be OK.

Any real problems, let the store do it and load with a legitimate copy of Windows 10 x64 Pro, not Home.
Remember,...

Format for exFat - I think that the MCT will do it but quick format manually.

OK?

:think:

Fine, do that.

Use the MCT to create a new boot drive with Windows 10 Home, x64.
Go with the default settings and when complete and tested, check with the Seagate for proper function.

Post...

Do you have a new USB flash drive?
Anything over 8 GB will do.

:nerd:

Yes, but I want you to use the MCT - Media Creation tool.

https://www.microsoft.com/en-us/software-download/windows10

Format the old USB Flash drive first. Backup any old data onto another...

So it's a build from a computer store?
Do you live near there?

They would have the resources to do it right but until complete do not plug in your external drives to test - and then do it right...

@Athalwolf -

Do you know you know how to boot into Recovery Mode or do you prefer the USB solution?
I would prefer to create a new Windows 10 Home USB Flash Drive.

Who makes your PC?

:think:

OK.

We are going to reinstall Windows 10 from the Recovery Partition or USB drive.
Disconnect all external drives and peripherals.

I just want a wired mouse and keyboard connected.

:think:

Athalwolf -

Did you go into your BIOS and set everything back to default values?

:nerd:

What computer do you have and how old?
Go into your BIOS and reset all values to Default, save and exit.

:think:

Wait. You reinstalled windows from scratch, the other day or just did a Repair Install?

:sick:

Hi. Please disconnect the external HDD.

It looks like it's time to do this -

Repair Install Windows 10 with an In-place Upgrade

What do you think?

:think:

I see. I'll bet that you cannot access the Seagate drive, correct?

:shock:

So there is no drive letter and you cannot access the drive?
Does it still show in Device Manager?

:think:

Status, please...

Post a expanded image of diskmgmt.

:huh:

DISM /Online /Cleanup-Image /Restorehealth

Note the spaces and hyphen. Does not have to be in caps.
The first command is fine - do the above and reboot.

Then check in This PC.

:-)