Today I turned on my computer to have it start loading normally and then go to a screen that says "Reboot and select proper Boot Device or insert book media in selected device and press a key". I looked around and saw that it can be solved by going into my bios and messing with a setting however I cant get into my bios. When my computer first starts up it goes to a screen that says "Gateway" with their logo and then it just goes to this error message. I have tried pressing f1-12 while in both screens, esc, and del but nothing has worked. My computer was working just fine yesterday and I don't know what could have happened to cause this. Any help is greatly appreciated!
If you wanted to see what computer I have: http://www.cnet.com/products/gateway-one-zx4970g-uw308-pentium-g645-2-9-ghz-6-gb-1-tb-led-21-5/specs/ (I know, kind of a sad rig ro have but its what I am working with right now)