Windows 7: acer aspire 6530g wont power on at all please help

hi everybody
I have an acer laptop model number aspire 6530g wont turn on at all
was using it then suddenly went off and never turned on after
i have tried removing the battery and removing the cmos battery tried the ac adapter only with no luck at all
I removed the graphics card as well and tried to power it on and nothing happened also
no lights no sound nothing just the light which indicate the ac adapter is plugged in that's all i get
the power light doesn't light, the battery light doesn't light also
I tested the power button by av meter and it does work
I will appreciate your help