If you go into BIOS, do you see your primary boot drive listed there? If not, the SSD/ HDD where Win10 is installed has failed. You'll need to replace that.
If you do see the device listed in BIOS, then on a different PC, create an OS recovery drive using a USB thumb drive. You can find the instructions here:
Did the error come up after installing a new drive / reconfiguring the boot drive (eg encrypting it), or out of the blue? If the former, I would say boot manager may need to be reconfigured.
I tried manually booting but it says something along the lines of "no bootable device". I'll tell you the truth, the rig was given to me to satisfy a debt and the guy didn't tell me he had an admin pass and then refused to tell it to me. So I wiped the drives thinking that would help. Bad move, I assume.
r72019
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Posted January 23rd, 2020 10:00
I would just do a clean install of windows 10, in thay case, since there's nothing you need on the boot drive anyway.