But this didn't stop the batch file fever that started under MS-DOS - and in some small circles, batch files are still as popular as they were in the beginning. Even though you may use Windows XP or Vista, batch files can save you tons of time by automatically starting multiple programs and performing different tasks at the single click of a button. But when one command conflicts with another command - or when one command asks for a process or information that isn't available, the computer returns results that aren't useable. That's an error. A prime example of this kind of error is when users attempt to use software that isn't applicable for their system. Viruses that destroy data are known as Trojan horses, viruses that explode their attacks are called bombs, and viruses that duplicate themselves are called worms. Some viruses are a combination of each, however they can be further identified according to where they're located on a computer. A virus originating from the boot sector of a computer is a boot-sector virus and this nasty devil does its dirty work the moment a computer is turned on. Title bar - this is the top-most part of a program that displays its own name or it may describe the contents displayed in another part of the interface. If a program is incorrectly coded, you may see a wrong description in this part of its interface. Menu bar - this part of a program displays menu items and menu options. On one hand, it affords us quick and easy access to numerous conveniences such as bank statements, favorite shopping centers, school and health records, and more. On the other hand, it can also grant the same access to those who aren't supposed to get it. Although it's a rare occurrence, hacking has become the biggest criminal nuisance in computer history. Computer salespersons are hired for a reason - and that's their knowledge. Often, these kind folks can help you resolve an issue over the phone and prevent you form having to buy a costly solution. As you can see, help is easy to find - You've just got to know where to look for it. Most of the contacts within these resources are extremely friendly and willing to take the time to walk you through a problem at little to no cost.