Device Manager Does Not Display Devices Not Currently Present in Windows 2000 (241257)

WORKAROUND

To work around this behavior and display phantom devices when you use the Show hidden devices command:

1. Click Start, point to Programs, point to Accessories, and then click Command Prompt.
2. At the command prompt, type the following lines, pressing ENTER after each line

   set devmgr_show_nonpresent_devices=1
   cd\%SystemRoot%\System32
   start devmgmt.msc

   where %SystemRoot% is the folder in which Windows 2000 is installed.
   
   
3. Troubleshoot the devices and drivers in Device Manager, as required.
   
   NOTE: You must first select show hidden devices on the Device Manager View menu before you can see devices that are no longer present in the system.
4. When you are done troubleshooting, quit Device Manager, and then close the Command Prompt window. Closing the window clears the variable you set in step 2 and prevents ghosted devices from being displayed when you use the Show hidden devices command.

NOTE: When you quit Device Manager and close the Command Prompt window, the set devmgr_show_nonpresent_devices=1 variable is turned off so you cannot see the phantom devices.

An alternative approach, for developers or power users who need this feature enabled constantly, is to set this environment variable globally. To do so, perform the following steps:

1. Right-click My Computer.
2. Click Properties.
3. Click the Advanced tab.
4. Click the Environment Variables tab.
5. Set the variables in the System Variables box.

NOTE: You should use this method only for troubleshooting or development purposes, to prevent users from accidentally uninstalling a required device that is not currently present (such as a USB device or docking station that is not currently connected to a laptop computer).