How can I fix

This is a variation of another answer I wrote related to this, but a lot of it still applies.

As far as the OS goes, I'm assuming you are running Windows 8.x or 10. These OSes are the most sensitive about file problems when compared to older versions of Windows. If it's particularly severe to the extent the contents have changed, you need up with Automatic Repair attempts that never work. My OS guess is educated guess, but it's within the ballpark of the correct answer. You can blame Secure Boot for causing this problem.

The first thing I'd try is a BCD/MBR refresh. What this will do is overwrite and replace the original files which may fix the problem. You most likely need to download installation media for this step, since HP does NOT ship their laptops with recovery media. You can purchase media from HP, but for the purposes of what you need it for that makes no sense. The links can be found here: Windows 8.x OR Windows 10

Once you have media, try rewriting the MBR and BCD. The instructions can be found here:

Windows 8.x OR Windows 10. I think the procedure between 8 and 10 is the same, but I would follow the specific steps for each OS just to be sure.

Another thing I'd look into that may cuase this is the hard drive. A lot of HP laptops use Seagate hard drives and I have personally found drives made after the 7.01 disaster have had high failure rates that are beyond what I consider reasonable. HP particularly likes Seagate and I suspect they get the best volume discount so they willingly disregard the problems these drives have had for many years. The way your computer behaves makes me a little supicious of the hard drive.

As far as the hard drive goes... I'm suspicious of the hard drive because this is not a normal behavior with automatic repair failures. Normally when what you are dealing with happens, it does not reboot instantly and will stay at the automatic repair screen. With how your computer is behaving, I'd recommend you check the drive out and make sure it's healthy so you don't find that you fixed it and the drive failed shortly after. CrystalDiskInfo works wonders for this and tells you in a way that's easy to understand by end users.

First keep tapping F8 key when starting you laptop choose Safe mode if it doesn't work.

Create a bootable usb drive of an OS you can use Rufus it is easy to use and insert it and switch on your laptop to begin a reinstalling a new OS .....