Laptop doesn't detect hard drives
So i tried booting up my laptop and there was no os loading. It wasn't showing on the bios so i tried an external hard drive and an usb. They showed up on the bios so i put the external hard drive in the laptop and tried to boot up ubuntu and it didn't want to detect the usb and hard drive. I tried the original hard drive on a nother laptop and it opened fine as external memory and then from it i installed ubuntu and when i put it back in it's own laptop it did the same thing and it didn't want to boot up. If you know a solution to this problem help if ypu could .