My macbook suddenly stopped showing USB flash drives in Finder when I plug them in.
I tried 3 different USB sticks - none work (worked just fine yesterday).
USB-ports work fine - I tested all three with an iPhone, iPad, my Nike+ device, even my usb-modem stick - everything works just fine. Except for the USB-storage devices...
The USB drives do not show up in the Disk Utility. The USB drives do not show up in the "System Report" (known as "System Profiler" in earlier versions of OSX). 1 times out of 10 they do show up as some weird "Composite device" there, but do not work.
I have Mac OS 10.7.5. I tried resetting NVRAM / PRAM - didn't help.
PS. the weird thing is that the drives do not show up under Boot Camp as well, when I'm on windows. So it's not just some drivers problem, but maybe firmware fault? My guess is - my Mac does not supply enough power to the USB ports when a USB drive is inserted? It's a hardware problem since the ports work fine with all other "non storage" devices.