I have a Compaq Presario F700 with Vista Home Premium 32bit. Yesterday the windows explorer do not reponds and i have to restarted it. When I do it, My speaker doesnt reconize by the comp, not appear in the device manager. I reboot the comp and nothing, then i have some other problems, Windows live messenger doesnt open, the avira antivirus doesnt update, i cannot see the device manager list,i cannot change my power options and the windows explorer takes to much time to open. Then I though that it was a malware, and try to run Malwarebytes it get frozen when a try to eliminate the treads, but i run it again and remove the treads but nothing happens. I use firefox and the vista theme is diferent from the other windows that have vista aero theme , i go to the theme list and vista aero dissapear from the list. My comp stills the same, with all the problems that have. I hope somebody could help and sorry for my english.