My laptop has recently had bootup problems. Its like this.... I turn the laptop on, nothing. screen doesnt come on. then it might do that a second time. I turn it on again and now windows is kind of running okay, bit unstable and the integrated keyboard and mouse wont work. I have to use an alternative mouse to shut it down. It might do that like two times as well. Then finally after numerous bootups it works absolutely fine!!! there are 2 possible causes that i can think of. The first is a possibiliy of the mains adapter i used in california. Im from UK you see. A different voltage over here. that might have messed it up, then again that might be completely ridiculous i dont know. the second possibility is a recent update to windows that i intalled seemed to conveniently coincide with the start of this problem. any help on this would be awesome as the noew school years starts in september and i dont wanna have to buy a new laptop just yet thanks in advance.