Computer won't boot unless I force boot to a drive which is blank in bios.

[Kiyometa]

Hello and thank you to anyone who can help.

I have an "older" computer that my mother uses and I had used macrium reflect to go to a new drive when she needed more space. I went from a 240GB Samsung SSD to a 500GB M.2 SATA SSD. Now, even if I use the old drive, the PC will be unable to boot into windows, requesting that a boot media be inserted. However, if you go through the BIOS and tell it to force boot from a drive, it has a selection that is completely blank, and if you select it, it will boot into Windows. I'm assuming that that is supposed to be Windows Boot Manager, but it is blank for whatever reason....

The specs are as follows

Intel i5-6600k

GTX 1050

Gigabyte Z170N-Wifi Rev 2.0

16GB DDR4 (currently left at stock cpu speeds until I can figure this out)
The bios is 22F, the latest. The Boot drive is the only drive attached and is set to GPT.

Any advice to fix this is greatly appreciated.

 

-Kiyo

SOLUTION: Someone on Discord mentioned I should check the CSM settings and since the drive is GPT, make sure it is disabled. That fixed it.

[Robchil]

turn off secure boot, delete secureboot keys..  does it work better then? 

 

if you want uefi you most likely have to reinstall windows. 

 

[Kiyometa]

30 minutes ago, Robchil said:

turn off secure boot, delete secureboot keys..  does it work better then? 

 

if you want uefi you most likely have to reinstall windows. 

 

Someone advised me to check the CSM setting in bios and make sure it is disabled since the boot drive is GPT, that fixed it. Thanks for answering though.