pop up message error when loading windows ( shell class info )

The operating system manages the resources of a computer, such as its internal memory, the disk drives, keyboard, monitor screen, mouse, printers, and network connections. People who use a computer to browse the web or play games have minimal contact with the operating system. Most of their time is spent with application programs.

These users tend to use the operating system only to fix problems, for example with a failed internet connection. The most recent versions of popular operating systems (such as Windows XP) have become very much oriented towards the consumer, hiding all but the most basic tasks from the casual user.

Computer programmers have more advanced needs than people who use the computer as a tool. Programmers need to compile and launch programs and automate recurring tasks. This tutorial is written for programmers who are already familiar with the basics of using a computer.

If you have prior experience using a computer for playing games or writing reports and are now learning to program, you will need to learn more about your operating system. Some students are reluctant to embark on this effort, either because they feel that they already know how to use their computer, or because they already have their hands full learning about programming. However, that is a short-sighted attitude. Without knowing the operating system, many common programming tasks seem tedious or even impossible.

Operating systems come with two different kinds of user interface:

* a graphical user interface or GUI
* a command line interface, also called a shell

Most computer users are familiar with the graphical user interface or GUI. Most GUI environments display a desktop that is populated with windows, icons and menus. You use apointer (directed by a mouse or trackball) to select items on the desktop. These interfaces are sometimes called WIMP interfaces, after the first letters of the words window, icon, menu, and pointer. Here is a screen capture of a typical WIMP interface:


To resolve this behavior, use one of the following methods:

Method 1: Run an online scan and check.

Online scan : Windows Live OneCare

Malicious Software Removal Tool : Microsoft Safety Scanner - Antivirus | Remove Spyware, Malware, Viruses Free

Method 2:
If the file is still exists then take a backup and then delete them. If this does not harm anything then you can delete them permanently.
For more information visit the below links:
Back up your files -
Back up your files
Backup and restore -
Backup and Restore - Windows 7 features - Microsoft Windows
Backup and restore questions -
Back up and restore: frequently asked questions

Found Info at __[.ShellClassInfo] files have appeared on my desktop - Microsoft Answers