1Perform "Disk Cleanup" regularly. The Disk Cleanup utility is an excellent way to get rid of temporary files, recycle bin, system logs and other non essential files that build up and take up memory. To perform a disk cleanup perform the following steps: Start > Control Panel > System and Security > Administrative Tools > Disk Clean Up. A wizard will pop up and show you what files can be selected for deletion. Follow the directions and delete the files you select. Perform this utility often to maintain optimum performance.
2Schedule your hard disks to be defragmented weekly. Think of your house. Your house is either clean or messy. A clean house makes it easy to find things. A dirty and cluttered house makes it difficult and time consuming to find what you want. The same can be applied to your hard drives. Over time, as you use programs and surf the web, files on your hard drive get moved around a lot, increasing the time it takes to find them. By using the Disk Defragmenter Utility you can instruct the computer to organize all the files on your hard drive to make it easier to find files. To perform the Disk Defragmenter Utility follow these steps: Start > Control Panel > System and Security > Administrative Tools > Disk Defragmenter.
3Utilize a quality anti-virus program. There are millions upon millions of viruses out there. There are some that steal your credit card information, some re-arrange files, some delete files, some completely render your computer useless. A popular magazine has recently reviewed the 10 most popular anti-viruses to give the consumer an idea on what anti-virus program they want. http://www.maximumpc.com/article/features/kill