bootcamp wont restore my windows partition

hi everyone, well i got i little proble one of my friend asked me to help him install windows on his macbook, and i did it, and time later he was looking for because his windows was mess up, he give me his mac to check it, and see if i can restore o reinstall the windows partition, but i look throuth everything i know, and first thing i noted was the partition i made for windows, it wasn't call windows or unknown, it says security copies of the time machine, the worst part of all i tried to restore the partitions with boot camp, but it didn't work at all it says that i need to format the entired driver into a single partition and then i can repartitionate, so what should i do?
sould i just format the entired macbook? or my friend has to take it to macstore...

 

thaks

thaks, i wasn't really sure my friend die as soon as i tell him....