Having some problems with my laptop. I'll try to describe the issue in detail.

A couple of months ago, I noticed that the ac adapter cord had loosened from the power brick. It still worked fine, but I thought it may be a hazard in the long run. I decided to replace it. Found one on ebay which when arrived appeared to be a genuine Asus product.....ie identical to the original in every way.

Everything seemed fine for a while, but then I left the laptop off for an extended amount of time (2 weeks). When I plugged in the lappy and started it up, the message in the taskbar sated that the battery was at 0%, but charging. Nothing unusual there, I thought. I used the laptop with it plugged in for a while and left it to charge over night.

Next morning, however it hadn't charged at all and would only start with the ac cord plugged in. I tested to see if the computer would start with the battery removed and the cord plugged in and yes...that worked.

Ok, so I needed a new battery. Ordered that and 2 weeks later it arrived.

Today I put in the new battery and plugged in the ac cord. The battery light turned yellow but only for a couple of seconds. I power up the laptop (still plugged in) and now the computer is running on 100% battery power (what little the new battery had in it from the factory) Unplugging and plugging in the ac cord does nothing. I then removed the new battery again and tried to start the pc with just the power cord. NOW THAT doesn't work!

Ok, next I put the old battery in and plug in the power. When I start up the laptop now, we're back to 0% and charging....but never charges!

So the new ac power cord tries to charge the old battery, but can't and will not charge the new one.