My PC is not recognizing my iPod touch 5th gen

I'm facing this problem since yesterday...My ipod is not charging and my pc is not recognizing it but when i connect to wall it charges fine...i tried my friend's mac and it charged on his mac but i didn't try itunes on it...

i have windows vista 64 bit...I tried different ports on my pc and it still didn't work but when i plug in my flash drive in the same ports my flash drive works fine...I also tried updating drivers from devica manager and it said something like your drivers are upto date or something...

can someone please help me....thanks.i also downloaded the latest version of itunes yesterday...