firstname.lastname@example.org XP Professional Pentium 2.4 Ghz Mobil M Processor 1 GB DDR 2100 Sony Notebook PCG-GRX570 Just recently this undersireable behaviour has begun with no recent new installs of hardware or software to readily be considered as the cause. Upon boot up the first window that is opened will not close. In order to get it to close I have to open Task manager, when I do an end task on any program or folder running and close out Task manager I can then successfully close that window that remains openand subsequent windows that are opened. I have my task bar in auto hide mode and it also will not pop up with curser being directed to cause it to do so. When I use the Windows key the task bar will pop up but 1st window opened after reboot will not close. Can anyone help me??