Hello!
There was a problem with running Debian.
The problem is this: put on your laptop (Asus x550cc) Debian everything worked well.
Then it became necessary to disassemble the laptop, I had to pull out the HDD. After everything was built back Linux stopped running.
Immediately it knocks out in the BIOS where the boot optiob priorities are empty, but the disk is displayed in the SATA configuration. The disk is EXACTLY serviceable and properly connected. I am so sure of this because this problem does not arise for the first time, before that it was solved by reinstalling the OS, but now I want to fix it all the same.
BIOS settings in default already demolished, did not help.
How to be?