Cannot change Screensaver

If you cannot change screensaver because the tab is missing in Properties window, this is a sign you may be infected by Vundo trojan/ MS Juan ./

Also the wallpaper cannot be changed because the wallpaper tab is missing.

Also your screensaver may be changed to  Windous “Blue screen”

Another sign are many pop-ups – with ads of fake antivirus programs.

Do not click on this ads! They all are scam!

Here is a good program made especially to fight Vundo virus: 

Vundofix is free.  You can read about Vundofix program here: