bob, besides checking the power supply, remember that this series has issues with a bad capacitor. "The problem is caused by NEC TOKIN 0E907 Proadlizer PF/A Capacitor for High Speed Decoupling Device, witch is responsible of coupling or decoupling the CPU hi speed/hi power(ac plugged in) or low speed/low power(ac unplugged)." check [http://www.laptoprepairblog.net/toshiba-satellite-l300-a300-freezing-or-restarting-when-ac-power-plugged-in/|on here] for more information on it. Hope this helps, good luck.
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bob, besides checking the power supply, remember that this series has issues with a bad capacitor. "The problem is caused by NEC TOKIN 0E907 Proadlizer PF/A Capacitor for High Speed Decoupling Device, witch is responsible of coupling or decoupling the CPU hi speed/hi power(ac plugged in) or low speed/low power(ac unplugged)." Hope this helps, good luck.
bob, besides checking the power supply, remember that this series has issues with a bad capacitor. "The problem is caused by NEC TOKIN 0E907 Proadlizer PF/A Capacitor for High Speed Decoupling Device, witch is responsible of coupling or decoupling the CPU hi speed/hi power(ac plugged in) or low speed/low power(ac unplugged)." check [http://www.laptoprepairblog.net/toshiba-satellite-l300-a300-freezing-or-restarting-when-ac-power-plugged-in/|on here] for more information on it. Hope this helps, good luck.