Having trouble booting

[Tcman2000]

Sorry if this has been asked before but I can't find any other threads that are helping.
I keep getting the reboot and select proper boot device error whenever I boot up my computer. I first had this problem when I first build my desktop and later solved it. But now it's back and I can't get past it. My SSD is set to first priority when booting, it's set over the HDD, I've tried booting from the HDD with the same error, Windows is properly installed(I've been going several months with no problem).
The only thing I did before the error started popping up was disconnect the HDD, attempt to boot up with the SSD alone(this is when the error popped up), and reconnected the HDD to try and boot up again only for the error to show up everytime.

 

[scout_03]

do you have 2 os one in the ssd and the other on the hdd .

 

[Tcman2000]

Yes, I forgot that I still have an OS on the HDD. Also I accidentally selected your answer as the best answer

 

[Tcman2000]

Can someone unsolve this thread

 

[scout_03]

so the system try to boot from both specialy if they are the same os so you need to get rid of the one in the hdd .

 

[Tcman2000]

so the system try to boot from both specialy if they are the same os so you need to get rid of the one in the hdd .

If that is the case why does the system not boot when only the SSD is in?

 

[scout_03]

put the ssd in and do sytem files repair with os dvd look like it miss boot loader .

 

[Tcman2000]

How do I attempt system files repair? I plugged in a USB with Windows 10 and am at the command prompt window.

Edit: I'm guessing you want me to use the bcdboot command, I am just unsure how to type the command
"Bcdboot /Windows" is as far as I've gotten

Would it be bcdboot c:/Windows?

 

[scout_03]

this win 10 is legit just made system to boot from usb and when it show up click on the files repair and it will do it .