Okay, so I've posted a topic about the SM Bus Controller and Chipset+VGA drivers but it doesn't matter anymore I solved the problem. Now there is another one... Before I reinstall my Acer the screen was freezing after I use some of my USB-ports like I've tried to connect my phone to the laptop but the screen was freezing so I reinstalled it to XP ( it was XP before too ) and got all of the drivers installed and everything and it works fine but the problem about the USB-ports isnt solved... I've tried all of the ports but nothing all I get is a freezing screen. Can someone help me about this issue? Please. Sorry for my English.