|Check in the camera menu system for "USB mode", it should be set to "Storage" if you want to copy pics over to the PC. In any case, if you have a card reader don't bother trying to sort the camera problem. Just get the card-reader to work and leave it plugged into the PC permanently once you have it working.|
If still having problems with all usb devices, go into Device Manager and uninstall all usb ports then restart Windows. It will detect the usb ports and re-install their drivers automatically.
Also if using an external usb hub these can cause problems. try plugging all usb devices directly into the computer's built-in ports.
Speaker icon - go into Control Panel (classic view) >> Sounds & Audio Devices >> under the Volume tab tick "Place volume icon in taskbar" and click OK
If already ticked, untick it - log off - log on - tick it - click OK.