How to Defrag a Computer
If your computer is slow, I suggest you defrag the hard drive before you think of buying a new one. Installing and uninstalling programs, and adding or removing files upsets the organization of the hard drive, making it hard for computers to access them. Fortunately, windows operating systems provides a free Disk Defragmenter utility that organizes your hard drive and improves the efficiency of your computer.
The idea behind disk defragmentation is to sort all the files so that every file is stored on sequential rings of disk. The disk defragmenter also optimizes a computer by placing all applications close to the operating system to minimize movement when an application loads.
Prepare your computer:
(i) Backup all workfiles and documents on a CDROM, DVD or another hard drive
(ii) Ensure you have closed all running programs, including browsers.
(iii) Make sure your computer is plugged into a constant source of power. Do not defragment without a battery backup, your hard drive may crash if your computer shuts off while defragmenting.
On your Desktop:
Click "Start" | "All Programs" | "Accessories" | "System Tools" | "Disk Defragmenter." This may differ slightly depending on the product of your computer. In this case I recommend you type in “disk defragmenter” on the search bar after you click “start.”
Select the hard disk drive you want to defrag. Usually for PC’s the hard disk drive you will want to defrag is Local Disk (C:) because that is the primary hard drive and it contains the Windows operating system.
Click "Defragment Disk."
This process could last for a few minutes or a few hours, depending on the size of your hard drive and the amount of the disk that needs to be defragmented.
Note: During this process you will lose internet connection, so the best time to do this is the period when you aren’t using your computer. Preferably at night or before you get off work.