Just run the setup type in your key and done!
Theres another option too:
Make your USB Stick bootable:
Open CMD as admin.
Type in the commands below in the right order!
1. list disk
2. select disk (select your usb stick, drive 0 or drive 1)
3. clean (everything will be deleted so copy your important files to your HDD)
4. create partition primary
5. select partition=1
6. active
7. format fs=fat32
8. assign
Now your usb stick is like a DVD.
Copy your windows iso file to the USB stick:
for ex:
Restart your PC.
While its turining on press F2 or F8, you will get to the BIOS
now change the BOOT ORDER and set the USB STICK to the first BOOT OPTION.
Restart again:
now the windows setup will begin and thats it.