How To Fix Error Booting?

[Xandak Rune]

"Reboot and Select proper Boot device or insert Boot media in selected Boot device"

A cmd line saying that after the launch screen, it worked fine last night, turn it on this morning, and this is here. How do I fix it? Do I need a new drive?

 

[ss202sl]

It can't see or access the drive. Make sure everything is connected properly. Can you see the drive in bios.