When you notice that your PC is behaving abnormally, or suspect a virus inside it, the first thing you should be doing is to run the System Configuration Utility or the MSCONFIG.  This can be run by typing "msconfig" (without quotes) in the Run Dialogue box.  In the Startup tab of Configuration Utility, check for any unwanted or unfamiliar names.  If you find one de-select it and go to its location and try deleting it.

Here is a way to create a simple automatic shutdown timer for Windows.  This is basically a batch program which lets user input the time in seconds to shutdown.

The program asks user to input the time in seconds after which the computer is required to be shut down.  This is particularly useful if you need to give your child the permission to use computer or internet for a fixed time.

This is how we do it.

Many of us might have listened to that beautiful piece of music XP played, when you first set up it.  The music file is hidden and the path to the file is as follows: