ok I'm helping my school fix their internet problem and there is only 7 computers working with the wire, well the ones that don't work with the wire I hooked up to my laptop to see if it was just the wire or something else. well only 4 didn't work and we have 25 hooked up. I don't know what the problem can be if the wire works on my computer but not the ones in school, what can the problem be?
P.S. the computers internet worked before.

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