Robert wants to buy an SSD to upgrade to Windows 10 instead of using his old hard drive, which runs Windows 8. Leo says that's a good idea. It's far faster. But if he has Windows 8 on there already, he may want to try downloading the Windows 10 ISO and then install it separately. Microsoft will then associate Windows 10 with his computer. He should check out Thurrott.com for more information on how to do a clean install of a Windows 10 upgrade.