First thing is first Click on Start button, Then right click on My Computer, and then click Properties button. 2: After Click on Properties you will see a Properties dialog box, click on the Advanced tab in Properties Dialog box. 3: In the Performance panel, click Settings.You can also go to Performance Panel by Opening Control Panel and then click on Performance and Maintenance button. 4: In the Performance Options dialog box, click the Advanced tab. 5: In the Virtual memory pane, click Change button.And Change the Initial size value and the Maximum size value to a higher value, click Set, and then click OK. 6: that’s all done :) Now Click OK to close the Performance Options dialog box, and then click OK to close the System Properties dialog box.