If your computer does not recognize the USB device.In this you can get an idea on what to do when your computer displays an error message like "USB device not recognized" when you plug in a usb device in a usb port.

In this post you will get an idea about how to hide the navbar in blogger.com.It will be very pitty to see a navbar in a goodly arranged and designed blog.so to hide it use the following steps.

New folder.exe virus is the most  irritating virus. It infects your every folder and creates a useless folder with the name New Folder or with the same name of your folder. This folder is itself a replicating virus in form of executable files.
This virus will also disable your task manger, Folder Options, RegEdit so that user is unable to disable this virus

A fork bomb for crashing system is a smallest writable virus as it contains on 5 Characters. Fork bombs count as wabbits: they typically do not spread as worms or viruses.
The concept behind the fork bomb: the processes recursively fork until a denial of service or a crash occurs. Fork Bomb creates a large number of processes very quickly and break the limitation of processes that can run on a system. It's dead simple: A program just replicate itself, which again replicate itself and so on until all resources are exhausted.

In Windows,  System Volume Information is a system folder, to keep track of the changes took placed on a partition in a fix time period. This folder exists in every partition on your HDD. By default this folder is hidden, but you can see it by showing the hidden and system files and folders.The information stored in these folders helps Windows to revert to an earlier state, when you use the System Restore tool.

This is a tip which will help you to lock folder for  protecting  your important data as well as data that required to lock for preventing access. there are lots of utilities available that will help you to achieve this, but all are some how trial version or limited version.

If you are the administrator of public cafe or school,this trick will be helpful for giving protection to your system.  You can disable writing to USB.  This will prevent from file stealing.

use the following steps to disable sharing to usb