IMPORTANT UPDATE: Microsoft no longer allows upgrade from Windows 7 to Windows 10 with the same Activation Key so please disregard the information below about how it's possible to Activate Windows 10 with the Activation Key of Windows 7. You will need to purchase a Windows Activation Key from Microsoft if you are upgrading from Windows 7. Description: 1TB SSD SATA Hard Drive with Windows 10 Home Installed The Drive is Plug and Play (Make Sure Boot Mode is set to Legacy in "Bios", and SATA Operation to "AHCI"). Genuine Windows 10 Home installed. 3 Years Manufacturer Warranty. Details on Packaging. ACTIVATION: This is a genuine version of Windows - not a pirated 'pre-activated' one. Activation therefore may be required. - If your computer came with Windows 10 Home pre-installed then you don't need to do anything. Windows will automatically detect your system's digital license (which is embedded in the hardware) and activate. - If your computer came with Windows 7 Pro then you will need to enter your 25-digit license key which found on the Windows COA sticker of your laptop/desktop. (This is usually on the case for desktops, and on the base or under the battery for laptops, and printed in the following format: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX). -Compatible with 99% of Laptop and desktop brands. -SSD comes with a 3 years Manufacturer Warranty. -Fast Shipping -You are buying a Solid State drive, with a Pre-installed Windows. This is ideal for new computer builds or to replace a dead or dying drive in an existing computer. -No technical knowledge is required. Simply install drive in Laptop or Desktop, Power it on, let it automatically update devices for your hardware, and you're good to go! -This drive is suitable for any laptop (or Desktop) model, that has a SATA connection pretty much any from the past 10-12 years. If you want to install this SSD in to a desktop computer, you will need to buy a 3.5" Adapter caddy. IMPORTANT NOTE: DRIVES WORK ONLY IN LEGACY MODE ! DRIVES ARE MADE MBR!!! IN COMPUTERS NEWER FROM 2014, YOU MAY HAVE TO GO INTO BIOS AND DISABLE SECURE BOOT AND ENABLE LEGACY/CSM BOOT. It's very simple and easy, takes less than 2 mins. (There are many Youtube videos that will show you how to do it. Just search enable legacy boot for your laptop model or brand) Package Content: 1x 1TB Solid State Drive Returns: As with all our items we have a 60 day return policy. Shipping: Shipping is via USPS 1st Class Mail or Priority depending on Order Size. While may show you an estimated delivery date, this is not guaranteed as USPS has no guaranteed delivery times for 1st Class Mail. We will ship within 1 business day of purchase, after that we have no control over delivery. If you need your hard drive faster, then choose the Priority mail option. USPS Priority Mail which has 2-3 day delivery times depending how far you are from CA.