We've discovered that somewhere along the update path, Microsoft has changed the way Windows XP does it's shutdown resulting in a new shutdown procedure for the FLEX-5000C.
Power the radio and PC up normally from the front panel.
To Power Down:
- Stop and close PowerSDR
- Shut Down windows using the START/Shutdown from the normal XP taskbar.
- When the monitor displays "Shutting Down" then press the front panel switch. This will power the radio down. The PC will complete it's shutdown and then everything will be quiet.