If the operating system you are using is Windows, you will find that the Task Manager can give you all the information you need about the various programs and processes running on the system. Whether it is any process check you want to make or you wish to know about the applications, the network statistics, the system services or the CPU usage, Windows Task Manager is the source of all information. Very often the operating system gets infected with various malware, spyware and viruses. The usual processes you are likely to observe in your Task Manager when there is no infection includes spoolsv.exe, csrss.exe, smss.exe, explorer.exe, isass.exe, alg.exe and winlogon.exe. But if you notice other processes whose names are not known to you or you have the slightest of doubts about, it simply means that your computer system is corrupted. One more way of understanding if your computer is under attack from a process virus, is to observe the speed at which the programs and processes run when you work on your computer. Very slow or frozen computers are sure indicators of virus infection. End the processes that don’t seem familiar to you and use an antivirus to scan and remove the infection. Once you have identified the malware, spyware, viruses or Trojans that seem to have infected your computer system, you must get the latest antivirus tool that will scan your computer and either repair or replace the infected programs. You may need to research a bit about the several virus and spyware removal tools available in the market. This can be done by searching online using the program or process names that you observe in Windows Task Manager on your computer. Get professional help if you are not able to do this on your own. It is also recommended that you monitor the performance of the CPU of your computer. Clicking on the Performance tab of Windows Task Manager will tell you about the memory usage and the applications and processes running on the system. You will also be able to understand how the resources are being used and why your computer is slowing down.