This blog is to tell you how to install windows 10 without product key Just pop your windows 10 installer device wait to see this screen after starting your computer Then press any key to enter the boot menu which looks like this Then select the options as per your choice and press next Press Install now then the following window will come up Then you have to press skip just beside the next button Then the setup of the windows would start After setup is complete. Then you have to agree the terms and conditions of the windows Then two options would appear to upgrade install or custom install.You have to choose for custom install Then it would ask you to manage your hard disk partitions. I would recommend you to format the whole drive and then select the hard disk an d press next After pressing next the windows would start installing and wait for it to install After the installation your laptop or computer would restart for couple of times....