Check Your Memory

From the desktop of your computer, right-click on the "My Computer" icon.  
Then left-click on "Properties", and then "Performance." Memory is measured in Megabytes of RAM. 128 MB RAM is the absolute minimum for any standard PC or laptop, and is well under the recommendation for many types of software. 

Increasing your RAM to 512 MB or more can increase your system's speed and performance by as much as 50%.