For about a couple of weeks now, my computer has been putting itself into hibernation or turns itself off, and when i try and turn it back on it'll turn on for about a second and turn off again, i have to leave it for about a minute and then turn it on or it'll just repeat this constantly. I've found that if i play games such as WoW then it'll turn off sooner than if i just go on msn etc, But it still does it it just takes much longer to do so. I cleaned it out yesterday, cleared it off dust etc but it still does it, would anyone have any idea of what the problem could be? thankyou