select proper disc yu kno the rest im dyin help

1 day i woke up and my computer was off when i turned it on it gave me the select proper boot device ect. Screen i been searching for solutions none have worked for me and what makes it harder is in the bios my 1st boot option is windows boot manager i cant select my hard drive idk whats going on please help

Its a asus desktop

Welcome to the forum!

Have you checked the cables? Could be a hard drive failure also.

Checked all cables and even tried connecting a hard drive i had laying around it reads both hard drives jus wont boot all the way up thats why im confused

Ok, I thought you were saying the drive wasn't even recognized. Was the old drive set up for your current system? If not, it won't boot either.