No Battery Detected (Possible Faulty Power Supply?)

[Hepstyle]

I have an ASUS K55A. I purchased this laptop from XOTICPC for use as a playback device in a live music setting. The first time I used it there was a loud buzz in the sound system which was fixed with a ground lift on the power supply.

I bought this machine in 2012, and the battery has died twice. Granted, the second time it happened with an after market battery. But on both occasions, despite the battery showing no signs of aging I would boot it and it would just no longer recognize the battery. There have been no electrical events like a surge or a lightning strike that I believe could fry the battery.

Thoughts?

 

[Prostar Computer]

Hard to trace over a forum. You or a good technician might be able to pick up electrical discrepancies on brick (power supply), the batteries, or even the computer's circuit board. I don't think this will suddenly go away with yet another battery.