Test your antivirus
To test if your antivirus is in good shape you should do as in continuing:
Open Notepad and copy this text:
the text should be in one horizontal line
Then save file as "eicar.com" including quotation-marks
After some seconds saving this file your antivirus should come with the message that this file is infected virus asking permision for its deletetion/clean.
This file is secure and its not gonna infect your computer in whatever way.It is a standart text developed by the European Institute for Computer Anti-virus Research (EICAR).Every antivirus is programed to load this file as a virus.
If your antivirus is not going to hack this file as a virus ,in your screen will appear DOS window with this text EICAR-STANDARD-ANTIVIRUS-TEST-FILE".If this happens then you should probably find some other Antivirus up to date,meaning your PC might
already being infected from viruses and your curent antivirus do not recognize them.