The type of laptop is Toshiba satellite A205-s5800
model#PSAF3u-0nQ015. The computer works fine when unplugged and running on battery alone, but once plugged in while on, after a while the pc freezes and powering off with the power button is the only thing that works.(in essence, if charged before turning on it works well. Initially i thought maybe it was the operating system, so i upgraded from windows vista to windows 7 but the problem still exists.
About a year ago i changed to a universal charger because my original charger got damaged. I was told by a pc tech that its possible that too much current was delivered to the laptop by the universal charger and hence resulted in the current problem. He suggested that perhaps changing the graphic card would solve the problem, however this dont seem quite logical so I'm looking for a second opinion, since i have already wasted money on another technician for upgrading to windows 7. Thanks in advance.