Hi, having this prob. notebook won't startup so i'm guessing its the adapter, supply, or connection on laptop. i just got it from my cousin and he has no clue. is there any way i can check any of these 3 myself? i have one of those volt METER's would i be able to use that. any help would be appreciated. thnxWhen you press the power button, does it show any signs of life (do any LED lights turn on or do you hear the fan start to spin)?  If not, try plugging it into a electrical outlet to see if it POWERS up then.  If it does, shut it down and leave it plugged into the electrical outlet over night to charge.  If it still doesn't work after recharging over night, the battery is likely SHOT and needs to be replaced.

nope it doesn't have any signs of life. when i plug it in no LED lights light up. thats why i wanted to test all 3 sources to see which one it is.ttthey I just used my volt meter thing and tested the ac adapter and its working perfectly. is there any way it can be the battery?Nope.  Just replace it with a known good spare.  If you think it is worth the investment, that would be the next STEP to take.