How to Know whether the Computer system is effected from Viruses Or Not???

Here Are the signs To know whether your PC is Having Infected the virus attacked

1) Hold Windows Logo Key and Press R key if the Run Option is missing then your PC is infected from Sality virus

2) Go to "My Computer" and Click The Tool from Menu and If Folder Option is missing then your PC is Infected from Autorun.inf Virus

3) Go to Start Menu and Type Cmd and Open If its does not access means Your PC is infected from Hidden Rootkit

4) Go to C:/ and The Font of Windows and Program is BOLD Then your PC attacked by Trojan Horse

5) Go to My Computer and Double click on any Drive example D:
If the Drive is opens in new window then your PC is Infected from win32 virus

6) If in Case your desktop Icon is invisible After 2 to 3 minutes then your System is infected from Desktop.exe Virus

7) Go to My Computer and go to D; or E; Volume Drive and if there were Two folders of same Name/Size/Files and Data ..its Means your Pc is Infected from .EXE viruses.
ENJOY...:)