Posted 09 March 2010 - 11:16 AM
You should be able to test your power supply with a regular voltage tester to see if you have the correct voltage or any voltage at all.
The DC jack in the laptop can also be checked by inserting the power supply into your laptop and wiggling it a bit. ( not too hard ).
If the power supply end moves quite a bit up and down and side to side, it's very possible that the DC jack alone is broken.
You can also test your laptop with another power supply from a friend that might also have a laptop and see if it will power up.
Hope this helps,
"Admire those who attempt great things, even though they fail."