Signs of Virus outbreak

In a world without demarcation of this, whatever may be applicable. Sophistication of technology has also allowed disalahguna. Virus created to bother other people. Although we have anti-virus perisian, It was not yet able to guarantee 100% selamat.Tahukah you whether the signs if the pc we have been afflicted by a virus?
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Signs have been plagued with a virus your pc is as follows:

* PC to hang after opening, and often applies.
* Achievements PC suddenly becomes damp our other features. Any application or fail that would be too slowly opened.
* Exit mesej "Out of memory error" although PC contain adequate space is insufficient memory.
* The Windows operating system should not be executed even before this we never touched a portion or change the registry settings.
* The Windows operating system can not run kerana fail-fail is important to run it suddenly disappeared.
* There is a program that was never installed before this suddenly appear and take care of itself.
* There is an unknown process is running and using lots of CPU resources.
* We must not install any new programs or applications.
* Windows is often reboot and apply process rebooting repeatedly.
* The utility such as scandisk melapurkan chakra many errors on the disc after doing imbasan chakra.
* The program or application that may be used before it crashes unexpectedly.
* Drive partition for hard disk, CD-ROM and leathery chakra suddenly lost our other features.
* Receive emails that contain adequate bizarre insertions, for example, contain adequate two extensions.
* Perisian Antivirus disappear suddenly.
* Perisian Antivirus should not be installed.
* Dialog boxes are exposed in the screen suddenly.
* PC system runs by itself, such as mouse pointing to something, open and close the CD-ROM tray by itself.
* Pointer mouse to change images and graphics.
* Terpapat odd icons on the system tray even though this was never installed before.
* Muzik or simple video suddenly played by itself.
* Saiz things fail to change, although we do not edit it before this.
* Fail-fail that we keep missing one by one.
* Properties fail to change anything by itself.