Harddisk and Other Input Device Aren’t Detected During Booting. It happened right after i tried to modify bios setting. actually i just want to change the boot order but somehow i slipped, so in order to keep the last setting i choose to activate the optimized default options. but after its restarted it opened the bios setting directly without any button pressed. I also couldn’t find booting priority options.

harddisk, flash usb, and dvd writer were also not detected by my laptop. i tried optimized default menu once again but i still couldn’t make it right. it didn’t show any input device during booting.

after struggling for a while i found the secure boot options
i wasnt sure about this option actually and i hadnt looked for it in internet, but after i disable it
tadaaaaaaaaaaa.
my laptop worked well like before 🙂

so if you somehow have some problem with me, make sure to check for secure boot option in your bios and disable it, it may solve your problem.