I bought some cheap knock off power cord (from hong kong) for my toshiba laptop. Put laptop down for a minute, came back and it was completely dead. The power supply smelled and was leaking a fluid. I'm positive the knock off is the problem and have learned my lesson. When I plug in the laptop with the right power cord, the lights come on and the fan runs, but nothing else. I have removed the battery and am working soley off the good power supply. What part would you suspect first?