when I log in, I check the "task manager"->"precesses", there is nothing under "user name". And also only a few icons in the right bottom corner of the desktop. Then if I log off and log in again, this time the computer works fine as normal. I can see "system, local, etc" under "user name" and also all of the icons showed up in the right bottom corner. It happened every time when I turned on my computer. What's the problem of it? How to fix it? Thank you very much.