windows 7 black screen check cable connection

#1
ok im just going to put it out there and say i have absolutely no knowledge with computers or technolagy really. i got my first laptop last year and it worked fine till now. its a toshiba. but everytime i start it up it. goes to a black screen saying check cable connection! pxe-mof : exiting intel pxe rom. no bootable device-- insert boot disk and press any key.
i dont know what the heck it means. also i hit f2 or f12 and it pops up with a lot of selextions i once again dont know about. i would go get it fixed but i just dont have the money? help please
 


#2
oh boy am i a dumb@## . i put this in windows 8 forum instead.....
 


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