Hello, two days ago Norton told me that I was attacked by somebody. It told me that I should scan with NPE. I deleted all dangerous files also some nvidia files because I thought they could be a virus. After that when I start my PC it turns the light from my mouse keyboard and headset on (Razer) then my first screen starts with the acer screen when it boots, but before this little BIOS *beep* should happen, the screen turns into stand by mode and has no signal anymore. After the second boot everything starts correctly. Does somebody has a suggestion what it could be? Sorry for my really bad english, i am german! Thanks for helping!