No one wants a computer infected with malicious software. Unfortunately, this problem is exceedingly common thanks to the hundreds of thousands of Internet threats go undetected and able to fool even the most experienced technology
You can always install an antivirus or special software to detect and remove malware but in most cases these programs do not have a 100% effectiveness. It is important that as users learn to identify symptoms that may indicate that your computer is infected with malware, identifying the problem is the first step to fix it.
1. Slow
the PC you go too slow, it can be a symptom of infection with malware, especially if it is a worm or Trojan. This is because malware consumes too many CPU resources, overloading your computer work and thus making it work much slower than normal. We must take into account that the computer may be slow for other reasons (lack of maintenance, hard disk full, insufficient RAM, processor overheating, etc.), so this symptom should join those who follow to determine whether has a bug or not.
2. Pop
If you’re browsing on the Internet and suddenly you find popups appear out of nowhere, surprise you and tell you that you have a virus and you need to install some software to remove it, it is likely that whether you are infected by malware, or cheat you want to infect you. These windows are one of the biggest scams, and are used for the user to install a program that will endanger the security of the computer and the data in it while you sell the misconception that it is the opposite. If the popup window comes from your own antivirus, then it is legitimate.
The windows open without you take any action, are generally symptoms of infection, the most common is that it is an adware (malware to display advertising), but in many cases they are more serious threats.
3. Search bars
You might have installed some free program that had malware and has also added a search bar for the browser. These appear just below the address bar of any browser common and have many buttons and weird things. Sometimes also they change the browser that you use by default when you write something in the address bar to investigate in Google. If the results appear like a stranger that is not search engine Google.com (or whatever you use), it is very possible that you have installed malware. One very common and annoying is ask.com
4. System malfunction
Many malicious programs make important operating system files and change making everything starts to malfunction. This can cause the system to display blue screen of death, that some applications close on their own or you can not open a file or software. Sometimes it’s as simple as that icons of folders and documents are displayed in white without the usual design, other times can be a document or download you can not erase anything. Things that should not happen.
5. Unknown error messages
If all the time you are receiving error messages indicating the operating system that there is any program or file you can not open, then you may have malware. Keep in mind that an application may be corrupted otherwise, but if you multiple error messages from several different programs and files, take notice as a symptom of infection appear.
6 . The antivirus or firewall are disabled
Another common feature that have the infected computer is that the antivirus and / or firewall are disabled for no apparent reason or without the user has done manually . Always check if these protection programs are functioning properly, especially if you suspect that your computer has malware
Source:. blogthinkbig.com
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