IPhone 5S not being recognized by laptop or itunes?

I have a new laptop… An acer aspire. When i plug my phone in itunes and my computer arent recognizing it. Itunes is up to date but i haven't updated to ios 8 just because i don't have enough storage. Is that why it won't charge or is there something else i can do? And yes, i've restarted both devices

Try reinstalling itunes

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