I have "Boot device not fount" error almost every time I reload my laptop

[YT12]

I have "Boot device not fount" error almost every time I reload my laptop, and I have to overpass this problem with hard reload. How I tried to solve it:

1. Used troubleshooting

2. Updated BIOS

3. Reinstall Windows 10 from external drive, because built in option (Settings-->Update&Security-->Recovery-->Get Started) didn't work

4.I checked for Intel Optane Memory (Devise Manager-->Disk Drives) and it was not there, so I tried to reinstall it from Intel website and I couldn't do this It gave me this error: Unsupported System BIOS, Error Code: 0xA008002D

5. I reinstall BIOS using HP tool and tried to install Optane Memory after this again and I had the same Error Code: 0xA008002D

After all these steps I came to the conclusion that my BIOS is faulty and I tried a few more times to reinstall it with no luck( can not install Optane Memory) . The question is what should I do with BIOS to be able to install Optane Memory or any other suggestions to fight this "Boot device not fount" error please.

[YT12]

Hey anyone facing similar issue ? I'm trying to fix it for more than two month and tried to contact support.. no luck . The computer now got even worse, it reboots unexpectedly every 2 hours . The log said "The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly." 

I did everything i could with the help of google and stuck now. Any help will be really appreciated.