I can't install Windows anymore via the prepared USB-Stick.

[CherylG]

@truus22

It appears that the usb flash drive may not be bootable. Have you used this same flash driver with same files and settings  before -or did you create a new one? It is easy to miss a correct setting in Rufus when creating a new flash drive. If the flash drive has been used previously with success it may also have gotten corrupted some way.

I would try the Media Creation Tool at Microsoft site to make a new Windows 10 installer.

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

 Select Download tool now and Save it to run later or select Run.
If you agree to the license terms, select Accept.
On the What do you want to do? page, select Create installation media for another PC, and then select Next.
Select the language, edition, and architecture (64-bit or 32-bit) for Windows 10.

The Guide here shows the steps:
https://www.tenforums.com/tutorials/2376-create-bootable-usb-flash-drive-install-windows-10-a.html

[truus22]

Hallo CherylG,

First of all, I would like to thank you for your very appreciated response.

I tried your suggestions and prepared the ISO installation file of Windows 10 in a different / new USB Drive with the Microsoft Media Creation Tool. Unfortunately it was not possible to install Windows 10 via the USB Drive afterwards. It seems as if the data on the prepared USB Drive is being ignored or not read. In any case, the installation process will not begin and instead it will simply start on to the existing Windows 10, which is already installed on my Laptop. In my humble opinion, the error lies in the settings on my HP laptop, probably somewhere in the BIOS.
Unfortunately my knowledge doesn't go so far that I dare to change something here.
Hopefully you can help me further in this?
Best regards,
Cor Jansen
The Netherlands

[CherylG]

@truus22

When the flash drive is prepared insert it in a usb port. Power on the laptop and immediately start tapping Esc key. From the menu tap F9 key and use the arrow keys to move to and select usb. Tap Enter key.
When installing and you go through first few screens- choose Custom and select each partition and delete each (if you have more than one).Install on the unallocated space left from that process.Continue with installation.It should pickup the key from BIOS but if it asks at any point just choose "I don't have a key". It will continue and should activate once you are online.

[truus22]

Hello CherylG,
I thank you for your new suggestion and I have been able to carry out this part:
"When the flash drive is prepared insert it in a usb port. Power on the laptop and immediately start tapping Esc key. From the menu tap F9 key and use the arrow keys to move to and select usb. Tap Enter key".
After that, however, the installation procedure did not start, but instead the existing Windows 10 installation simply started up, as in a normal startup procedure.
I have repeated your suggestion twice, but without success.
Hopefully you can help me even further and I would like to hear that. I wish you a nice weekend,
Best regards,
Cor Jansen
the Netherlands

[CherylG]

Have you tried more than one USB port? Usually you have USB 3.0 ports on left side when facing the laptop and USB 2.0 on right side. Try the USB 2,0 port.

[truus22]

Hello CherylG,
I thank you for your new suggestion and Yes, I've tried multiple USB ports and I have only have 2.0 USB ports. My Laptop is 8 years old, but the problem arose about 4 weeks ago.
Hopefully someone will be able to help me solve this problem.
Best regards,
Cor Jansen
the Netherlands