My Antivirus says "No Threats Detected", I have a Doubt??Find it before Your system Crashes,& It's Free

Hi!! Many of you are using the Top Antivirus (download it free from here) available in the market, but still many of times, you think that, there is a virus or spyware in your system. When you scan the system, it says "no threats detected", you don't believe your antivirus, because you feel that there is something wrong with your system, & it is not responding as previous. Now, how to clear your doubts???. You don't have to spend a single penny for this , it's free--:), you have it in your system. remember my last post , use of windows task manager , to stop your "not responding programs" (see how to use Task Manager).
So, my dear friends , if you have a doubt, then clear it, before your system crashes, or your important , files & passwords are stolen. Just open your Task manager", by clicking Ctrl+Alt+Del, then go to the processes, & see which processes are running in your system. There is a description of the process in right side, with user name in middle. Identify the unknown process & by clicking, end process you can end that process. But before ending that process, first check that program in any serach engine, like Google or Bing, otherwise you may end some important process, necessary for your system. see the screen shots below

See, in the screen shot . that there is no user name allotted to the process, also there is no description of the process, but still it is using 1Mb of the space, ????? see what result came out when I serached by typing csrss.exe in Google----->

"IT WAS A TROJAN VIRUS "

This csrss.exe was a trojan virus , stealing my passwords & other information. So, do not believe always , what your antivirus says. Find it yourself, before it's too late. In the next post, I will write some other uses of Task Manager, till then keep reading, Enjoy. The only small complaint from the readers,,-----please comment , ....to improve my posts, & to give something , worth use of a common man.