First step, scan your com.
Second step, defrag your harddisk.
Third step, uninstall unnecessary stuff.
Fourth step, if all fails to improve the situation, try system
restore.
It helps to give some info like what was the last thing
done/that happened to the com before you experienced the slow
loading. Is it only when using the internet, or everything loads
slowly.
And do provide specs like ur processor speed, ram, OS etc..
