Toshiba Portege
Electrical wire

I bought my Toshiba porteger 2 years ago with a 3 year warranty. Within 6 months the electrical chord shorted. They gave me an old repaired one for temporary use which stopped working after 3 hours. The new replacement wire seemed very hard and after an year it has severed half way and I have stopped using it for fear of shorting. Took it to the dealer who says it is a mechanical damage and not covered by waranty. My take is that it is poor quality wire which is breaking off? Wrote to the company a month ago but no response. Sad a good company gone to dogs