The mysterious USB PORT Phenomenon has self correctede - no idea why.
A couple of very strange problems with my PC and Monitor USB port started today. The following is rather lengthy as I have provided as much relevant data as possible.
Dell Studio 540
2 front USB ports
4 Rear USB Ports
Dell SP 2009W Monitor
DVI connection to PC
4 port USB hub connection to PC
2 rear USB Ports
2 side USB Ports
Microsoft Wireless Keyboard & Mouse. (replacement for Dell purchased with PC)
Transponder normally connected to monitor rear USB port
Seagate 300GB External Hard Drive -USB or Firewire
Normally connected to monitor side port
Seagate Free Agent 500 GB External Hard Drive -USB
Not normally used with PC
Seagate 300GB External Hard Drive:
?Used for daily backup.
?Backup 11/19 failed because PC could not find it.
?Checked connection at device, monitor USB port and monitor USB connection to pc and then attempted manual back-up but PC still could not find it. When connected in both side and rear monitor USB ports the audible connection/disconnection alert can heard but it does not appear on computer drive list and the backup program cannot find it so backup fails
?When connected in the PC front and rear USB ports the audible connection alert can be heard and a popup balloon appears stating the device is ready to use, However it does not appear on computer drive list and the backup program cannot find it so backup fails
?Connected to my laptop the unit DOES appear on the drive list and files can be accessed.
This would seem to indicate the fault is not with this Seagate drive
Transponder for Keyboard & Mouse:
Was working fine but after removal to check connections it will not work in any monitor USB port
DOES work when in PC front and rear USB ports
Seagate Free Agent 500 GB External Hard Drive:
When connected to monitor USB port it DOES appear on drive list and files can be accessed
This would seem to indicate the monitor USP ports are connected to the PC.
What does this indicate? How to make it right?