There are few things more frustrating than a computer that crashes all the time. Whether it causes you to lose half of a letter you just typed in, get disconnected from your favorite game, or causes you to miss out on an online auction, a crashing computer is a nightmare. There are many reasons why your computer can become unstable, but one of the more common ones is malicious software, more commonly known as "malware".
Infectious software comes in the form of viruses, trojans, spyware and adware. This software attempts to use your computer for identity theft, sending out spam messages, and other illegal activities. Some viruses actually attempt to steal your credit card and banking information for resale on the black market. But malicious software is often very poorly written and is known to cause all sorts of problems on the computer it infects.
Computer viruses take advantage of weaknesses in your computer's operating system in order to hide from you and to look for ways to spread to other machines. A virus will often insert itself into a legitimate program or modify system configuration settings. When it infects your machine, it does not do so gently, the virus writer doesn't care if your machine is still in good shape after his virus is installed.
Once these system files or configuration settings are corrupted by malicious software, then how your computer will react is unpredictable. Programs that once ran fine may begin to act strangely or not run at all. Your network connections may become unstable or slow, and you may begin experiencing more frequent unexplained rebooting of your PC. A computer virus will do whatever it takes to infect your machine no matter how much damage it might do. All it cares about is getting installed and then hiding from you as it does the other things it was programmed to do.
However returning your computer to its normal operating state is fairly simple thanks to malicious software removal tools. These tools will peek inside all of your files and system settings looking for the digital fingerprints that malicious software leaves behind. Once it finds these fingerprints it will remove the viruses and help restore your computer to the way it was before. Malicious software removal tools can not only fix the immediate problems you are experiencing, they can also help to prevent future infections. This not only protects your computer, but protects you from becoming a victim of identity theft.
Source: http://kill-virus-computer.blogspot.com/2010/08/computer-crashing-it-might-be-malicious.html
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