Acer 5520 won't power on

Hi I am having problems with my brother's acer laptop. It's an Acer Aspire 5520. The first time we experienced this problem I tried removing the battery and I placed the battery back again. I plugged the ac adaptor into another outlet. I was able to get a a greenlight on the battery and on the hard drive. For some reason I am not able to get a greenlight on both indicators. I tried plugging the laptop on another outlet. It seems I'm not able to power it up anymore. What do you think the problem is? Is it the battery or the power adapter?

 

Does the power jack (where the adapter plugs in) loose? If so, you probably have a broken power jack.

If the laptop will not turn on with the battery taken out completely and just the power brick plugged in, you can rule out the battery.

 

first of all the power adapter is not loose. is there a possibility that the problem here is the mother board?

 

There is certainly a possibility, however, you would likely get some form of lights even with a bad motherboard. I think the issue is that your system is not getting power at all.

 

i read on another forum that removing the battery for an 1 hr or 2 would solve the problem. after that time i should try plugging it again and that would give me power on my laptop. i don't know if that would work.

 

if that doesnt i would have to call acer. thanks for your help man.