black screen with blinking cursor after automaticly reboot

[smokya]

Hello after playing WoW my pc just started to reboot after the bios option thingy it went black with a blinking cursor after coupke reboots I tryed to reinstall windows 8 but he wont start up from the windows 8 installation disk I went to my bios and found out that he cant find my hard disk only the windows 8 disk but he wont start up from that is my computer fixable or is this his first death? Please help my out im on my phone searching for help tho

 

[smokya]

After changing some settings in de bios I manage to get in the EFI shell option from there on I started the disk and everyting is fine now