The cleaning of viruses in a computer requires a technical ritual that most often is beyond the routine operations of the novice user, not well aware of the viruses malicious antics.

For Instance: IT IS NOT POSSIBLE TO CLEAN A COMPUTER MAGNETIC MEDIA WITH A VIRUS ACTIVE IN THE MEMORY. The virus would re-infect everything again immediately after the "cleaning". Even the antivirus loaded in the memory to perform the cleaning would get contaminated itself.

On account of this, many users, after attempting to clean a computer, get frustrated and wrongly judged the antivirus did not work because the viruses remained as before. In fact the antivirus might have worked even if for fractions of a second before the virus re-infected everything again.

Then, how to perform a cleaning if the virus goes straight to the memory every time the computer is booted up ?

ANSWER: A diskette is used to both start up the computer and run the cleaning programs, not disturbing the infected hard disk in supplying any program code. Thus, the hidden virus in the hard disk cannot get itself into the memory.
This diskette is commonly called "Boot-Up Disk"

 Furthermore, it becomes a very hazardous operation for novices to assess the ROM-BIOS setup in order to check the drive boot up sequence so that the diskette drive (A:) is chosen for the boot, prior to the hard disk drive (C:). These are tasks for those familiarized with the description of the above operations only.

 For unsavvy users, not well acquainted with such operations, the reasonable procedure to remove viruses is to shut down the computer and look for help with someone who are used to doing it.

 Notwithstanding all the discomfort in removing viruses of a computer, the ordeal is not entirely over after the operation is concluded.
The most painstaking but indispensable operations, after removing viruses from a computer, are the ones related to the scanning and cleaning tens, hundreds or maybe thousands of diskettes known or suspected to have been used while the computer was infected.

Never operate an infected computer.

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