Windows 10 wont boot on hdd, boots on flash drive

Apr 22, 2018
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I cant boot windows 10 on my hdd. when i open my pc, i was able to use it until now and it happened suddenly. i just see the blue screen which presents you options for recovery. i tried automatic repair but it cant fix my problem. so i downloaded media creation tool from windows website and created a bootable usb flash drive (on another pc of course). I opened the pc and changed boot priority, set it to the flash drive. tried automatic repair again but to no avail. i removed the flash drive. whenever i open it now, it just says 'reboot and select proper boot device.' then when i inserted the flash drive again, it booted normally (using my flash drive, i think). how do i boot normally again from my hdd?

Any thoughts on how i can fix this?