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Tuesday, November 30, 2010

HOW TO REMOVE VIRUS FROM USB DRIVES

one of the ways by which a virus can infect your PC is through USB/Pen drives. Common viruses such as ’Ravmon’ , ‘New Folder.exe’, ‘Orkut is banned’ etc are spreading through USB drives. Most anti virus programs are unable to detect them and even if they do, in most cases they are unable to delete the file, only quarantine it. Here are the things which you can do if you want to remove such viruses from your USB drives

Whenever you plug a USB drive in your system, a window will appear similar to the one shown below

USB

Don’t click on Ok , just choose ‘Cancel’. Open the Command Prompt by typing ‘cmd‘ in the run box. In the command prompt type the drive letter: and press enter . Now type dir /w/a and press enter.

This will display a list of the files in the pen drive. Check whether the following files are there or not

    * Autorun.inf
    * Ravmon.exe
    * New Folder.exe
    * svchost.exe
    * Heap41a
    * or any other exe file which may be suspicious.

If any of the above files are there, then probably the USB drive is infected. In command prompt type attrib -r -a -s -h *.* and press enter. This will remove the Read Only, Archive, System and hidden file attribute from all the files. Now just delete the files using the command del filename. example del Ravmon.exe. Delete all the files that are suspicious. To be on a safer side, just scan the USB drive with an anti virus program to check whether it is free of virus or not. Now remove the drive and plug it again. In most of the cases, the real culprit turns out to be the “Autorun.inf” file which mostly gets executed when someone clicks Ok in the dialog window which appears above. Thus the infections can spread

Security Tip

Disable the Autoplay feature of USB drives. If you disable the Autoplay feature of USB drives, then there are lesser chances of the virus spreading. A tool which can perform such a function is Tweak UI. Download it from here install it.

Tweak UI

Run the program. Now you can disable the Autoplay feature of the removable drives as shown above. By following the above steps, you can keep your USB drives clean.






Sunday, October 24, 2010

PRINT USING DOS

If you are working at the Command
Prompt your can modify and print the
text file very easily. There are different
ways to print text a file while working
at the Command Prompt. Assuming
the file you want to print is in your
current folder, you can type here with
your file name with extension. For
example
print filename.txt
and press Enter. Here .txt is the file
extension. You must use the extension.
Now in the same way you can edit this
file before printing with given
command
edit filename.txt
and press Enter. This command opens
the MS-DOS Editor to edit this file. Edit
the file and then press Alt, F, P to print
it.

CREATE SYSTEM DATA BACKUP

Using System State backup technique,
you can create the backup of
windows critical components on any
system drive and this backup file can
be used if the original copy is lost,
damaged, or destroyed. On windows
2000/XP/Vista, system state data
wizard backed up the following
components.
Windows registry
Windows boot files
COM+ class registration database
But if you are running domain
controller, system state data wizard
backed up the following components.
Active Directory
System volume (SYSVOL)
Windows registry
Windows boot files
COM+ class registration database
Follow the given steps to run System
State data backup wizard:
To use this feature, you will need to
be logged into your computer with
administrative rights.
First click on Start button> All
programs> Accessories> System Tools
then click on Backup.
Now by default backup wizard will
start, click on advanced mode option
to change the backup settings.
Here a dialog box will appear with title
."Backup Utility", select "Welcome" tab
and click on Backup Wizard
[Advanced] button to create backup
of windows important components.
Click on Next button to continue
backup wizard.
Now select option "Only back up the
System State date" on what to back
up page and click on Next button.
Here click on Browse button to
specify the destination for backup file
and also set backup file name under
"Type a name for this backup" box
then click on Next button.
Now verify your selected settings and
click on Finish button to start backup
process

HIDE THE SECURITY CENTRE ICON

The security centre application in vista
informs users about their security
setting if not configured properly,by
displaying the balloon in the system
tray.At times,this could prove to be
quite irritating.If you would like to
disable these prompts, follow the steps
below:
right click the security centre icon and
select "open security centre".
Click the "change the way security
centre alerts me"link
from the "do you want to be notified
of security issues"window,click"don't
notify me and don't display the icon
(not recommended).

HOW TO RESET A FORGOTTEN PASSWORD IN XP

If your computer is password
protected and you forgot your
password,just follow the steps below
to reset it:
restart your computer
keep pressing f11 continuesly
there will appear black screen with
option:safe mode,safe mode with
command prompt and safe mode with
networking.
You have to choose safe mode with
command prompt.
There will appear a command prompt
screen
in command prompt you have to
type"net user"and then press enter,
then you have to enter "net user
YOUR ADMINISTRATOR'S Name *, and
then press enter.
There will appear "type password and
confirm password"you will not be able
to see password you typed on screen.
Now you are almost done, restart
computer and type password you
have typed in command prompt.
Tu