iPhone 4, unknown device driver when USB inserted it.
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?