I have an asus g74sx laptop, I think my adapter has a short in it but I dont know for sure. My computer keep switching from ac to battery mode and when I play with the cord I it will start charging the battery. I bought a universal adapter from best buy about a week and a half ago, the problem with this new adapter is that head that will power my laptop dosent fit, and I have to fiddle with that cord to make it work. I also noticed that every once in a while the light on the adapter I bought turns off. I don't have that problem with the original adapter. So my question is do I have two bad adapters or could it be the jack in my laptop? Thanks for your help and for your time!!!