If you think your computer may have been infected with a computer virus or want to know what to look out for then there are a few different things that should help give an induication of a possible computer virus.

First up is that your computer may slow down or not run as fast as you are used to it running. It may also freeze of crash.

Files go missing or get corrupted.

Content of files may get changed from what they were originally.

Some programs do not run or work correctly.

You may notice activity taking place on yuor computer that shoudl not be. A tell tale sign is if one of the lights for a drivce on the computer is flashing indicating it is doing something when you are not doing anything on the computer.