Cannot install Windows 10 from USB stick - issue with GRUB?

I have followed the instructions here and created a bootable Windows 10 USB stick, but when I try to run the installation the system keeps booting into the GRUB 2.0 bootloader. Unfortunately, I have no experience with GRUB.

The current system is set up for dual-booting Windows 10 and Linux Mint Debian Edition 4 - I recall the setup process being extremely long and involved (for my level of experience) and for some reason I cannot boot into Windows at all: After selecting it in the GRUB menu, the screen turns black for a moment and then immediately returns to the menu.

How do I make the system boot from the USB stick, so I can throw everything from the disk and make a fresh Windows 10 installation?

UPDATE 1: Out of desperation, I booted into a Linux on another USB stick and used dd to overwrite the first few megabytes of the hard drive with zeros. Upon restart, however, I get this error:

Cannot boot from any device  Current boot order and device status   1: USB HDD:   Model XYZ (USB) -> No valid operating system   2: ATAPI CD0: Model XYZ (DVD) -> No valid operating system   3: ATA HDD0:  Model XYZ (HDD) -> No valid operating system

Is it the ISO on the USB stick after all? If yes, can anyone recommend a good tool for Linux to create a proper bootable Windows 10 USB stick? Unfortunately, I cannot install WoeUSB as suggested below.

UPDATE 2: I used disks to have a look at the USB stick and noticed that the option "Bootable" was not activated. I checked the box and now the system seems to boot into the Windows setup, but the process gets interrupted with the following error code:

Recovery

Your PC/Device needs to be repaired

An unexpected error has occurred.

Error code: 0xc00002c4

You'll need to use recovery tools. If you don't have any installation media (like a disc or USB device), contact your PC administrator or PC/Device manufacturer.

Press Enter to try again

Press F8 for Startup Settings

Pressing Enter or F8 just returns me to the error screen. I couldn't find any helpful information on this, does anybody know about this error code?