I have a Toshiba laptop that has just recently developed a fault, I try to power it onbut it won't come up at all I got some info on http/www.miratouch.blogspot.com that help power on but shut off immidiately after some seconds, sometime it reaches logon screen before shut off again, I have tried removing memory, battery!, but still shutting off,,,,pls any more suggestions will be appreciated. Thanks.