Hi all, what is the best way to test a laptop's power cable? I recently used a multimeter to test the output from the adapter, there wasno power. I then tested the output from the mains (the cable that goes from the wall to the adapter. Needless to say, there was a minor explosion as the power arced to the multimeter pointer. That cable was evidently good! ... but how do I avoid explosions and possible electrocution next time?