Hello!
Ten days ago I bought a Lifebook NH570, with no OS. So I installed (original) Win7 Professional 64 bit, all original Drivers from CD, updated with the newest versions from the internet. Soon-the same day, my Lifebook froze-keyboard, mouse, touchpad couldn't do anything. I only could open CD-Rom. No strange sounds, there was no overheating. It happened four to five times next few days, no matter if I am only checking my e-mail, or I have Photoshop, Word, Chrome, Mediaplayer, a few explorer windows open, all in the same time. So the forth day I reinstalled Windows, and all the drivers, and all the programs I use. The same thing happened, Lifebook freezes randomly, and all I can do is to shut it down on the button. My friend tested TWICE all the hardware (with 3D Vantage, I think is called), but he says everything functions normally. It happens again, I am afraid the regular Service-office will find nothing, just as my friend (and he IS a real expert). Some say it might be problem with the software. I have only one antivirus program (Avast) adn Spybot. I do not know what to do, I really need help.