09-20-2016 10:42 AM
09-21-2016 12:56 PM
Below is an HP Document with steps specifically about your type of complaint. If they do not resolve then your issue my be hardware releated requiring it to looked at by an HP Authorized Repair Center.
HP Notebook PCs - Computer Starts but Screen Remains Blank (Windows 10, 8)
Make it easier for others to find solutions, by marking my answer “Accept as Solution” if it solves your problem.