Remove Ethernet Cable or WiFi connection - Sometimes Windows needs to verify something online.Try restarting the computer 2 or 3 times to see if that helps. If it takes longer than 5 hours, exit the installation. It may be that Windows is slowed for a hardware problem or network issue and needs time to analyze a way to work around that. If it appears that the process is stuck for an hour or so, wait for at least 3-5 hours, to see if there is any progress. However, sometimes it seems that this is hanging forever and that nothing is happening. On this screen the instruction is to wait for Installation to complete. During a Windows 10 upgrade or installation, users see a “Ready to Install” screen prior to the actual installation.