I am facing a weird problem with the Toshiba laptop which I am using. I have a Toshiba Satellite A75 which is installed with Windows XP operating system. The problem is that the laptop does not boot when on AC power. Whenever AC adapter is connected to the laptop, the laptop only boots till the BIOS screen. If the AC adapter is not connected then the laptop drains the battery out. Is this some hardware problem? If anybody else is facing similar Toshiba Satellite A75 boot issue with AC power then suggest some solutions which might help me in solving the issue.