It is very easy to create alarm in your computer with task manager .The alarm may be like starting programs automatically.The most of programs starts automatically based on trigger .This trigger causes the task to run .
I will show you keeping alarm in your computer (starting programs automatically)
1.click start and type "task scheduler"
2.click task scheduler. Task scheduler window will get opened.
3. Click "Create basic task " that displaying under "Action" on right of the screen. "Create basic task wizard" will get opened.
4. Now enter your task name in the "Name" box and enter the description of your task in "Description" box.
5.Click "Next".Now you have to set the trigger for your task.Choose any trigger you want. As i keeping alarm i will choose daily.
6.Click "Next". Set the date and time when your task should be triggered and check the box synchronize across time zones.I am going to keep alarm at 4'o clock.
7. Click "Next". Now you have to choose the task that you want . I have chose "start a program".
8. Click "Next". Now you have to choose the path of the program.As i going to keep alarm i will choose songs from my computer.
8.Click "Next".The list of all above activity will displayed.
9. click on "Finish". Now you have created a alarm in your computer.
NOTE:
The above procedure will vary from computer to computer .The above tutorial is based on my pc.Try this above if you have any doubts please free to comment.