Havana wrote:
I'm not sure how to check this. The light on the adapter is on, but I don't have another G73J to test with. Is there any way to test?
Just to be clear you might want to confirm if you are getting power but no video, or just a dead system with no power at all and no lights, etc.
If you are really getting 'no power'/dead system, assuming this part of the hardware is working okay, check for a battery charge light when the notebook and battery are plugged in.
Try to gently wiggle the power cord if you don't see a battery charge light to see if the the light comes on sometimes which could indicate a bad connection although you still need to determine if the problem is with the power cord or power jack in the notebook.
Also, the system should power on without the battery although you want to make sure nothing gets near the exposed battery contacts.
Feel free to continue troubleshooting, but if you wish and are located in the U.S., you can also contact ASUS and arrange to send it back for out-of-warranty repair:
http://www.service.asus.com/#!consumer/csn9It depends on your situation, but if it makes sense for you, consider putting the money into a new system with warranty rather than an older system without warranty (I work for ASUS though and might be a little biased).
If you're concerned about data, you should be able to get an external USB hard drive housing to connect your old hard drive (assuming it's okay) and transfer the data to another system if this helps.