Consider the following scenario:
- You have a Windows 7-based or Windows Server 2008 R2-based computer that uses a third-party Wireless Wide Area Network (WWAN) adapter.
- You plug a SIM card into the WWAN adapter and then connect to the network by using the adapter.
- You put the computer into sleep mode (system power state S3).
- You remove the SIM card from the WWAN adapter, and then you plug the SIM card back into the adapter.
- You resume the computer from sleep mode.
Windows cannot load the device driver for this hardware because a previous instance of the device driver is still in memory.