What can I do if my windows 10 not booting hp?

If your HP Envy running Windows 10 won't boot, try the following steps: perform a hard reset, boot into Safe Mode, perform a system restore, check for and disconnect any external devices, check for malware, and perform a Windows 10 repair installation. If none of these steps work, you may need to consider a full factory reset or contacting HP support for further assistance. It's always a good idea to back up your important files before attempting any troubleshooting steps.