On the Performance tab...double-click CPU Usage...you should see two graphs (actually 3, 1 composite and 2 individual).
I have an Athon II processor...both Device Manager and Task Manager reflect both cores...I have no clue why your system is different.
If you mean "diskette drive could not be removed", then I would say that relates to a floppy drive.
I think I'd replace the CMOS battery and see if these hardware-related situations disappear.
Edited by hamluis, 04 July 2010 - 11:03 AM.