1. download the
Windows 10 media creation tool and use it to make a win 10 installer on USB - if you don't have latest installer already
2. remove hdd and any other drive apart from ssd from PC (or just unplug the power cable on hdd)
3. change bios so USB is 1st in boot order, ssd 2nd (unless motherboard lets you set boot so it boots off 1 device for one boot and then defaults to ssd, then use this to boot off USB and set ssd as default)
4. run installer and follow this: :
http://www.tenforums.com/tutorials/1950-windows-10-clean-install.html
5. when you reach the screen asking for licence, click "I don't have a key" and win 10 will continue to install and reactivate once finished
6. Once win 10 installed, restart PC a few times to make sure it boots off SSD.
7. Do you want anything off hdd? if so, power down PC, unplug PC, put hdd back in, restart PC and go into BIOS and make sure hdd isn't added as a boot device. Don't change anything else.
8. copy data off hdd onto ssd
9. its not ideal to have 2 installs of windows 10 on same PC, so at some stage you will want to wipe it off hdd. To do that, easiest way is:
go to settings/update & security/recoverty
under advanced startup, click the restart now button
this restarts windows in a blue menu
choose troubleshoot
choose advanced
choose command prompt
type
diskpart and press enter
type
list disk and press enter
this shows all drives available, DVD/USB and hdd, make note of hdd number
type
Select disk X - where X is the number of the hdd you want to wipe, change X to that number and press enter (careful not to choose SSD)
once the drive you want to wipe is chosen, type
Clean
note clean will wipe entire hdd so make sure you copied everything you want before running it.