If your HP laptop won't boot Windows 10, this could happen for several reasons like corrupted operating system, a hardware issue, or a problem with the boot order in the BIOS. In order to check the boot order you can try restarting the laptop and accessing the BIOS. If the laptop still won't boot, you can try a system restore or a Windows 10 reset. If the issue persists, you can boot into safe mode and try to troubleshoot the problem. If none of these steps work, then contact HP support for additional assistance. They can provide guidance on how to resolve the issue and get your laptop to boot into Windows 10 successfully.