So my friend got a problem. He wanted to reboot his pc so he shat it down, took out the battery for about 15 seconds, put it back and tried to load his pc. But after reseting the battery he got an error screen (american megatrand stuff) which told him that his boot order options are not presented. When trying to load from bios he gets an error that he is trying to boot from incorrect device so it is asking him to plug a correct boot device. At the same time, bios shows his HDD in load order but he cant boot from it. What could've happened? could his hdd die during that reboot? He tried changing sata mode from ide to ahci but it didn't make any difference.