I bought the computer does not know what the reasons are always some strange virus, while also download some of the more powerful anti-virus software, but seems to have no major effect, the machine sometimes still very slow response card death, and later my brother gave me install best antivirus for PC, since the installation of the best antivirus for PC I found my camera has improved significantly after me through best antivirus for PC anti-virus response speed of the machine that I can not not happy shouting die, but after I found the best antivirus for PC installed those messy virus never to harass my computer it, recent computer use from the feeling this is not your thing of it.