Running WinXP sp2: USB devices have ceased being available to view in My Computer, Explorer etc. Windows finds them and says they are ready to use then there could be a message such as G:\ refers to a location that is unavailable. It could be on a hard drive on this computer, or on a network.... Sometimes there is no message, just nothing happens after plugging in the USB device.
No USB drives are visible in computer management. Under device manager the USB device is shown as a disk drive with a yellow exclamation mark and the properties for a USB 2.0 Flash disk device read: Windows cannot start this hardware device because its configuration information (in the registry) is incomplete or damaged. (Code 19)
I have followed the troubleshooter. I have repaired Windows to no avail. I have no idea what caused the USB devices to suddenly stop working. I haven't found any information in the Internet that will resolve this problem. Most code 19 errors refer to cd or dvd drives.