Use Task Manager to See which Programs are hogging Resources

Whenever your computer starts to run sluggish or hang, you may want to check the performance status of your machine and see what program/process is using a lot of memory.

1. Right-click the taskbar and select Task Manager. In Windows XP, you can do this or just press Ctrl+Alt+Del.

2. Click on the performance tab, look at the status of your CPU and your memory (if you're an advanced user, you can just use resource monitor).

 

3. Then click on processes tab, you can either filter by cpu or memory usage. You can do it based on your performance observation. If the program using a lot of resources one that is rarely used or not needed, then you can uninstall that program.