Hi Bin2003:
It sounds like you have somebody hanging around in the back ground, there is a program running that either wont close or cant close (for whatever reason).
Here is a link to start testing for this problem, http://support.microsoft.com/kb/331796 it’s called “Clean Boot”. If there is a program booting with the system and it’s a dead program, this might “temporarily” take it out so you can do a “boot”.. When the system reboots, see how well it runs, and go from there.
If this works, you will want to go back in to “MSCONFIG” and look at what was booting to see if you can figure out what program it was. You do not want to just run your computer in “Clean Boot” all the time, you might need againJ
Let’s start there and see how that works, then we will move on.
Thank you for the post, good luck.
Don
Microsoft Answers Support Engineer
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