How to fix operating system not found error?

Question

Hard disks

I put Win 10 on hard, at the first start from the laptop I did not find the system. The reboot did not help, the hard drive with win10 is not seen on the laptop, but the hard drive with win7 is all right. Moreover, everything works fine on the computer from which win10 was installed, it sees both the OS and the hard itself. Notebook Sony Vaio PCG-71912V.

Answer 1

What means

bios button missing

This is not a physical button. Try to find a standard key combination specifically for your laptop. Most likely it is one of the standard

• F2
  
• Del
  
• F12
  

Answer 2

What does bios missing mean?

Answer 3

As an exercise in telepathy:
The system does not boot, because you installed uefi, but you are loading legacy, or vice versa.
And the "bios button" disappeared, because now there is an instruction for loading and it works out. After it worked and gave an error, the laptop no longer waits for pressing f12, it only accepts alt + counter + cases.
Try this - press the power button and at the same time quickly press F12 several times. Until it appears, either your error or the BIOS screen. Try to repeat the whole procedure several times.

Answer 4

What was the error after?