@Eeeee1
Given the date of your post, I would have expected someone to respond to it before this -- but since that has not happened, I will take a shot at it ...
This issue is almost always due to a failing drive.
If your PC is new enough to support UEFI, you can use these steps to test the hard drive: http://support.hp.com/us-en/document/c00439024
If not, to check the drive you have to follow these steps:
1) Press Esc key repeatedly, several times a second, while rebooting the laptop. Do NOT hold the key down, just press it over and over.
2) Eventually, you will see an HP Startup Menu
3) Press the Function key for testing the hard drive (usually F2) and let it run.
I am a volunteer and I do not work for, nor represent, HP