My Windows 7 desktop PC has four USB ports, all of which are in use. However, no peripherals are automatically visible in Explorer.
I've used the troubleshooter to fix the drivers. I get a message stating that there was a driver problem with the Intel10H10 Family USB Universal Host Controllers 3A34, 3A35, 3A36, 3A38, 3A39, 3A3A, 3A3C, as well as the USB Mass Storage Device. It all works eventually, but why do I have to do this every time I start up?
It may be that your motherboard needs a BIOS update. Look on the manufacturer's support site for a newer version. The problem could also be caused by outdated motherboard drivers; as with the BIOS, newer versions should be available from the manufacturer's support site.
If you're still getting the same problem, it may be that the USB ports have power saving options enabled. Go to Start, right click Computer and choose Manage, Device Manager.
Expand the Universal Serial Bus controllers list and double click the first USB Root Hub listed. Choose the Properties box and click the Power Management tab. Ensure that the option to 'Allow the computer to turn off this device to save power' is not selected. Repeat the process for each USB root hub, then reboot.