Hi,
The first thing I would try is what happens if you remove the memory out of the laptop.
Normally it would beep without any memory meaning that the laptop is trying to boot.
If it beeps, try booting with only one stick of ram at the time (assuming you have 2 )
Also you could try to do a power reset :
Remove ram and battery and hold power button for about 60 seconds.
Then put ram back and plug the power and try to boot.
If all that fails: laptop is defective