My iPhone 4s stopped syncing to my iTunes out of nowhere?

I have an HP laptop and I have the latest version of iTunes installed. Also my phone used to sync to my iTunes and then stopped out of nowhere. I then reinstalled iTunes 4 times and it still wouldn't work but out of nowhere one day, my phone synced to iTunes again. Then recently it completely stopped syncing again.
However, when I plug my chord into my laptop, my laptop detects it as it makes the noise when a device is inserted into the USB slot. My phone won't charge OR sync to iTunes though and I tried to find my phone on my laptop by searching for iPhone in the search bar, and nothing comes up.

Try using different computers/USB slots/borrow a friend's apple cable.

If anyone you know has an apple device try connect it to your computer (of course don't let it sync) to see if iTunes picks it up.

Failing that, its Android time.

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