reboot and select proper boot device on Acer Predator g6-710

TomHeld

hi all

This morning I woke up in peace to start the PC and suddenly an error: reboot and select proper boot device.
I looked at the bios and my ssd hard drive with windows is missing.
I opened the PC case and the ssd is fine in the M2 slot, so it's not a hardware problem.
So I started to solve it with reboot usb, I tried to fix it after windows startup repair, but it didn't work.
I've tried several ways to fix this from the diskpart command on the command line, but nothing worked.
Can you advise me how to fix this, or the possible cause of the problem ??
My system

Win 10 pro

My specifications

CPU: intel core i7 7700k
GPU: Nvidia GeForce GTX 1080
RAM: 16 gb DDR4 SDRAM


Storage
1: 2 tb hdd disk
2: 256 gb ssd disk (Windows)

Commodore_1995#

Did this problem occur after any windows update? What happens when you access the bios, press f9 and then f10 to save the bios?