Showing posts with label computer tips. Show all posts
Showing posts with label computer tips. Show all posts

Wednesday, December 15, 2010

How To Delete Virus by Using Command Prompt (CMD)

Microsoft Command Prompt "attrib" is a very useful tool to check if your hard drives even your flashdisks have been infected by a virus.
You will know if a Malware is inside your hard drive just by looking at the attributes of each files and the file that has the attributes of +s +h +r
The function of attrib is to set and remove file attributes (read-only, archive, system and hidden).

Launch attrib
To start attrib
  1. Go to Start Menu > Run
  2. Type cmd (cmd stands for command prompt)
  3. Press Enter key
The Command Prompt will appear showing us where is our location in the directory.

                                    command prompt showing the current location in the directory
Using attrib
To use attrib
  1. Go to the root directory first by typing cd\(because this is always the target of Malware / Virus)
2. Type attrib and press Enter key

                      after typing attrib, all the attributes of all the files (excluding folders) will be shown
In this example, I have two files that are considered as malware.
Note that there are two files which I outlined in red (SilentSoftech.exe and autorun.inf). Since you cannot see this file nor delete it (because the attributes that was set on these files are +s +h +r)
  1. +s - meaning it is a system file (which also means that you cannot delete it just by using the delete command)
  2. +h - means it is hidden (so you cannot delete it)
  3. +r - means it is a read only file ( which also means that you cannot delete it just by using the delete command)
Now we need to set the attributes of autorun.inf to -s -h -r (so that we can manually delete it)
  1. Type attrib -s -h -r autorun.inf ( be sure to include -s -h -r because you cannot change the attributes using only -s or -h or -r alone)
  2. Type attrib again to check if your changes have been commited
  3. If the autorun.inf file has no more attributes, you can now delete it by typing del autorun.inf
  4. Since SilentSoftech.exe is a malware you can remove its attributes by doing step 1 and step 3(just change the filename) ex. attrib -s -h -r silentsoftech.exe
      a) I typed the attrib command with the -s -h -r setting b) the result after I presse enter                   -autorun.inf has no attributes left
There you have it!!!!
NOTE : when autorun.inf keeps coming back even if you already deleted it, be sure to check your Task Manager by pressing CTRL + ALT + DELETE ( a virus is still running as a process thats why you cannot delete it. KILL the process first by selecting it and clicking End Process.
NOTE: You can also apply the attrib -s -h -r command to all the partition of your computer, drive D: drive E: drive F: (all of your drives). For example. for drive D, just type "D:" (minus the double quote) then you can see that your current drive is D.. type there the command "attrib -s -h -r *.exe" for exe files and "attrib -s -h -r *.inf" and then delete the file by "del autorun.inf".

Hope this work for you guys.....

prevent your computer from virus infection

firstly..prevention is better than cure....so it much worth if you prevent it.r your computer will be heavy with virus infection.

What is a Virus? and why can be infected? 
Simply put a Virus is a Malicious Software (MalWare) created by people who wants to destroy.. your files, your computer, your flashdisk...
(NOTE: Virus and Malware will be used in this article interchangeably)
Now, How do there Malware infects your computer?
  • Downloading pornographic materials, games and applications in untrusted websites
  • Downloading files through peer-to-peer programs (e.g. limewire, torrent, ares)
  • inserting your flashdisk to other infected computer and inserting it back to your computer without scanning it first

Ways in preventing Virus infection on your Computer

NOTE: If your Antivirus couldn't delete the malware you can Safe Mode you computer by following this:
  1. Restart your computer
  2. After hearing your computer beep once during startup, but before the Windows icon appears, tap the F8 key continually; Instead of Windows loading as normal, the Advanced Options Menu should appear;
  3. Select Run Windows in Safe Mode, then press Enter.
  4. Then scan your computer using an updated Antivirus.
  • SCAN FIRST! Each and everytime you insert a USB drive/flash disk on your computer don't forget to scan it first. (Given that your Antivirus is up-to-date).
  • You can also install utilities that will check the flash disk that you inserted for malware infection. Search it on Major Geeks (this is not an affiliate site)
hope that you can follow this prevention...if virus infect in your computer, you can also delete the virus using Command Prompt <<

Recover your lost data or partition volume and etc

yesterday i found very useful software, as i want to get my data back on my hand. hmm,,well i had 1computer(CPU) from my Paksu, and i had to accomplish my task to make it normal again...
as when repairing in process i found that the the volume HDD..corrupted..win XP3 professional...damn,,so i decide that to retain back the data in hdd...


i had try another process to get back the data..the problem is...the volume appear as dynamic volume so that when i want to format again....the volume was not shown in screen....usually the volume was a 2 partition...when i approaches to retain, another partition not shown....so i called the software to fix this...Easeus data Recovery Wizard, ..maybe can rewrite the mbr and so on..but it is hard to get the fake one of this copy, because the producer was control over it.you can try google it,,haha




you can download it...from any site..the popular site such freshwap n win7dl....click link k
byeee....thats all..huhu...