My acer aspire 4520 can't on

[Guest]

my acer aspire 4520 can't on
even it don,t have the signal lamp after i plugged in and switch on the the electricity

 

[frozenlead]

Definitely a power problem. Unplug your battery and try powering it off AC power. Use a multimeter if you have one to check if your AC adapter is functioning correctly.