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What is a Computer Virus?

By definition, computer viruses are executable programs that can reproduce or replicate and disrupt a computer’s normal operation. The spread of computer viruses started in the late 1970’s when floppy disks were used widely by computer owners to exchange and save files. Viruses were primarily transferred to another computer through this mode of storage. Viruses attach themselves on any part of program especially those which are executed upon starting up a computer. At present, viruses are transferred through networks and the internet.

How Does A Computer Virus Work?

There are two types of viruses and they are identified on the way they replicate once they come in contact with your computer’s hard drive. These types are known as “Nonresident viruses” and “Resident viruses”. The difference between these two are explained below.

Nonresident Computer Virus

A nonresident computer virus is also known as a finder virus. It is consist of a module that searches and infects a new file that is compatible to its configuration and a module that replicates and infects any executable file that the finder module is able to find. This type of computer virus is harmful because it usually operates as a background program and is not easily noticed by any computer owner.

Resident Computer Virus

A resident computer virus also contains a module for replication but it doesn’t need to be summoned by a finder module. The virus program is simply loaded to the memory, once it is executed and does the same infecting process to other files; it will be doing the same process every time you use the affected programs on your PC or even every moment that you turn your machine on. This type of virus is capable of infecting a lot of files on your computer with the use of a fast infector, but doing so will also increase the chances of it being detected by an antivirus program.

What does a Computer Virus Do?

A computer virus infects files on your computer especially those that are used in the boot up process. Once a computer is infected by a virus, processes become slower to load and programs become more susceptible to “crashes” and internal memory errors. Other computer viruses may also erase or corrupt important documents and files on your computer making it inaccessible. Still, there are powerful viruses that can totally erase your hard drive’s memory and even damage your computer’s hard disk.

 

Preventing Computer Viruses

Computer viruses are quite easy to prevent using antivirus programs. There are lots of antivirus programs available on the internet today which can be purchased using a credit or a debit card. Installing an antivirus program is an effective way of preventing computer viruses from spreading in your computer’s memory. USB antivirus is also useful in preventing the spread of viruses through a USB mass storage device.

Performing a regular wide memory scan will also lessen the chances of any computer virus from spreading. Viruses are normally detected by your antivirus program and are immediately moved to a place where it is incapable of executing itself and infecting other important files in your computer. The antivirus software you purchased is also capable of deleting viruses and other malicious programs from your computer.

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Categories Computer Virus
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Have you ever experienced using a computer then suddenly it hanged and stayed on one page for a long time? This is a common scenario especially when a computer becomes exhausted because it has been used for a long period of time. It may also be caused by malicious software (malware) or viruses that may have corrupted some files on your registry.

Knowing what to do during these critical situations will help you save your computer from further damages that may prove to be very expensive repairs in the long run. Prevent the spread of malicious software and save your computer from damages. Learn when to “Reboot” your computer and spare yourself from these problems.

When and Why?

Computers depend on a lot of executable programs saved on your RAM in order for it to run properly. Over time as you use your machine for a lot of your work, your RAM may become overwhelmed and experience some errors and have corrupted files in it. It is also possible that your registry has been infected by a type of virus which causes the computer hang, errors and crashes. Rebooting your PC when these errors occur helps lessen the impact and may even fix the existing errors and restore your system to a safe state.

Situations That Needs a Reboot

1.    Reboot After a New Program Installation

Your system will automatically alert you to reboot your computer after a new program is installed to it. This is primarily needed to enable your system to properly write all the needed files and information on your drive. Failing to reboot your computer will render the program useless. The program will not work properly unless a soft reboot/ restart is done.

2.    Reboot When an Internal Problem Caused Your Computer to Hang

The type of reboot applicable to this problem depends on the situation. If your mouse pointer can still access the windows logo on the lower left corner of your screen then you can do the soft reboot of “restart” by choosing the right option. If in case the screen or the window hanged totally (the pointer can’t be moved and the shortcut keys are not working) then a hard reboot is needed. It is done by holding the power key for about 5-7 seconds until the indicator lights on your machine turns off.

3.    Reboot To Safe Mode When Computer Suddenly Shuts Down

 

Rebooting to safe mode is needed when an error happens or the machine suddenly turned off due to power outage or not enough battery power. It is recommended that you choose the safe mode option on the start-up screen upon turning your machine on to help your system cope up with any errors and fix it without sacrificing other files.

4.    Reboot When Reinstalling Your Operating System

This option is needed when you already decided to reformat your computer due to viruses that can’t even be removed. It is done by pressing F12 when prompted after the power button is pressed. F12 will show you the booting up options but before turning your PC on you must place your installer disk on the DVD drive first for it to be detected upon booting up.

Categories Computer Maintenance
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Computer Viruses are unwanted self-replicating program that infects your computer without you knowing it. There are thousands of viruses luring around the internet at present which may enter your computer anytime it finds an opportunity. Anything that is unwanted should be removed, quarantined and deleted from your machine’s memory.

Viruses are not only unwanted, they are also harmful and destructive. How will you remove one that is already on your computer’s hard drive? A thorough knowledge on the “how to’s” can save you a lot of money in repairs!

Check this related article: What are Computer Viruses

Computer viruses are found anywhere in the computing and internet space. From USB’s to emails, free software and the like. It is almost impossible to distinguish these tiny, self-replicating executable programs. The only way to know it is when your machine is already infected and starting to slow down. Although virus protection software are available, the free version you might be using is incapable of detecting the more advanced viruses.

How Computer Viruses Work

We found this video that explains how viruses work. The video is a bit outdated, but the concepts remain relevant. Current viruses, though, use social engineering to infect machines. You should never click on an email link or a pop up ad. Instead, type the web address by hand in your internet browser to make sure you are not being redirected to an infected website.

Ways to Remove Computer Viruses.

Remove Worst Computer Viruses using Windows Restore

Windows operating systems like XP, Vista and Windows 7 are designed to have a System restore tool which is very useful once your computer becomes infected by a virus at one point. This tool works by restoring an earlier image of your operating system. This is done by turning on your machine and booting on the system restore option. Your system will be automatically restored to the state before it was infected by the virus. Once the restore process is done make sure to perform a wide scan on your memory and remove all detected viruses.

 Registry repair virus removal

There are also instances that a virus attacks your computer’s registry making your computer slow and hang most of the time. A simple way to remove the virus that causes this is by downloading free registry repair software or just letting windows do the process. After the registry repair, do the wide scan and remove all detected viruses.

 Removing a virus using your antivirus software

Remove Computer Viruses Antivirus software can also most recent computer viruses from your computer. This is done by simply doing a full scan on your machine’s memory. Once the scan is done, the software will automatically move the malicious files into a virus vault. If you are using a professional version, you can choose to delete the viruses detected and solve the problem right away although viruses which has infected the computer before the antivirus software was installed can, either infect the software or will not be detected by the software itself.

 Reformat

 If you really want to clean up your system then reinstalling your operating system is a very effective way. This is done by totally reformatting your computer’s hard drive which means that all of the files saved and those which has been infected will be totally removed from your computer, that is why a system restore and a back-up folder is recommended to be saved on another partition. Once your drive has been reformatted, you can insert your software installation CD on your built-in or portable DVD drive and boot up your computer using the CD by pressing F10. The re-installation process will start automatically and all the viruses will be removed.

If you cannot fix it yourself

In some cases, the sole idea of trying to fix a virus yourself may scare you. We can help you with virus removal and many other services either by phone and remote support, at your home or place of business or in our locations in Gaithersburg, MD or Vienna, VA.

We are happy to answer any questions about Computer Viruses or help you Repair a Computer Worm Infection. Please give us a call, we are standing by to help.

Categories Computer Virus
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Your computer, just like your car, needs to be maintained. Lack of maintenance would cause your machine to slow down and even have a lot of malwares and viruses that will later on damage your hard drive and would render your computer useless in a later time. Here is a rundown of the maintenance checklist to maintain your computer at its peak performance.

 

1.     Always Remember to Remove Junk and Unwanted Files

There are two ways to do this maintenance step. First is by performing a disk cleanup.

Your computer actually accumulates a lot of files when you use it in browsing the internet. Most of these files are useless like downloaded contents which are in your download folders. The second is by clearing your browsing history.

2.     Control all your Installed Programs

Uninstall the trial versions which have already expired. Don’t waste your computer’s power and energy by keeping useless programs. There are two options that you have. It is either completely uninstalling the program and deleting it or registering your product by getting a license.

3.     Secure your Computer

Install a good antivirus software. The free versions that are offered may protect you but in a limited level. Spending on a license will open your way to a full protection for your computer’s software and its contents as well. Avoid using illegal versions of any software.

Some computer geeks make professional versions of some programs free but you don’t know what is in there. You may enjoy it for a short period of time but later on render your machine useless due to malwares and viruses that were brought by the illegal software you used.

4.     Set a Limit for Downloads

Make sure that you are getting safe downloads from secure sites. Be careful of the things that you are feeding your machine. Search for credible websites where you can get the free software that you want.

 5.     Avoid Bad Websites

Avoiding XXX websites and others which offer things that are too good to be true, actually carry a lots of viruses and tracking cookies which can infect your computer. It is always best to stay away from these sites. Also, don’t open any suspicious emails. These type of emails most likely carries a virus with it.

6.     Organize your Files

Always put your files in designated folders and on the directories they belong. This not only saves you time but also makes your computer easier to manage. Delete all files that are not used and keep those that you will need in the future.

7.     Defragment your Drive

Your disk has to be defragmented and set in order. Your drive actually accumulates all the programs and in time it creates some packets of free spaces that consumes and exhausts its power.

This simple list will surely help you maximize your use of the machine you bought. Follow this computer maintenance checklist and everything will work perfectly as you want it!

Categories Computer Maintenance
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