iPhone 4, unknown device driver when USB inserted it.

Say,

I have inserted an iPhone 4 into a laptop which is running Windows 7 32-Bit, it would charge my phone previously when plugged in the laptop. Suddenly - comes an error comes up "unrecognised USB device appears and the iPhone no longer charges in the process.

I have rebooted phone & laptop twice already & this has still not resolved the problem.

How do i fix this & what solution do you recommend i should go with to overcome this problem?

TX
shaunwinginAsked:
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BlueComputeConnect With a Mentor Commented:
It's usually worth trying to uninstall itunes and then reboot and reinstall itunes then try again.  Let us know how that goes.
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Sikhumbuzo NtsadaConnect With a Mentor Senior IT TechnicianCommented:
How old is the laptop, it could be your USB ports are going. Also go to device manager and see if it's being recognised - if it's seen and without drivers, right click and update, windows should search for drivers for you.
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shaunwinginAuthor Commented:
It didn't find a driver ... laptop not more than 2 or 3 years I would estimate. The usb works fine with a mouse....
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