Good morning and thank you very much for the answer. when we start installing the operating system, then we have to choose the language for the installation. in the next step we have to choose install now. When Well Starts in the Installation Program, it displays the following message: "No driver is missing" if you have the driver from a USB stick or a DVD drive. ISO is genuine downloaded directly from Microsoft. I mention the message because as I explained I have a vision problem and I can not make you a screenshot at that moment. of course what may be responsible for this problem should be the USB driver. the machine does not have usb2 has only USB 3. But I do not know which driver to choose to be able to overcome the specific problem that has been created in this step. Any help will be highly appreciated.