Hi, i have an ibm thinkpad type 2628 (pentirum III). the charger was lost, and my son found a charger that he thought would work. while i was at work, he plugged a sysco router charger (48 volts) into the laptop. now the laptop won't turn on. my question is, would the pc just shut off when a power current larger than allowed, is plugged in? (just like when it gets too hot, it shuts off). is there a fuse or reset or something? or is this thing just fried? there must be a way to fix this. or is there? thanks.