回複：Does your power supply ----This is a new question I never kne

my power supply just likes following link,

http://generalsaving.com/productfile/G_DELL_PA10/200/G_DELL_PA10_z_0128.php

Do you think it is three lines ? but there are only two lines connect motherboard throught  power jack. right?

 I already ordered another motherboard yesterday. It will come in three to four days.

 I have other two power supply adapters but don’t know if they are two lines or three lines.

I will go home to check , if they are two lines. maybe what your idea is correct : my power

supply's third line dead , so it can turn on other Laptop but can't turn on my laptop.

 Thanks!