Welcome to the HP Forums 🙂 I would like to take a moment and thank you for using this forum, it is a great place to find answers. For you to have the best experience on the HP forum, you could also visit our HP Forums Guide for First Time Here? Learn How to Post and More. I see from your post that you are having issues with the notebook. Don't worry we'll work together to help you find a solution.
To provide you with an accurate solution, I'll need a few more details:
Have you recently made any software or hardware changes on the PC before the issue started?
Did it happen after a recent software update or Windows update?
Have you tried to connect this laptop to an external monitor and check if it works?
Many startup errors and other problems can be resolved by decreasing the amount of power stored in hardware components. Decreasing stored power is sometimes referred to as a "Hard Reset". Use the following steps to perform a hard reset on a computer:
1. If Windows is open, click Start and then Shutdown.
If Windows is not open and the computer has power, press and hold the power button on the computer until the computer shuts off.
2. With the power off, disconnect the power cord from the back of the computer.
3. With the power off and the power cord disconnected, press the power button on the computer for 5 seconds. The power light indicator on or near the power button might turn on briefly but then go out.
4. Reconnect the power cord and turn on the power.