it just turned off when I plug power lead in nothing still

You may want to check the charger with a multi meter to see if its up to snuff, if you have access to another one try that . Was the laptop dead when you plugged it in or only close and died immediately on plugging it in? Does the fan run or are there any lights on the laptop . If there are than try this ,remove the laptop battery and disconnect the power then hold down the power button for 60 seconds. then reinstall the battery and plug in the power and boot the laptop. if it works it was a case of static discharge if there is no joy lets move on to the ram . Remove one stick of ram and try to boot the laptop if it doesnt boot then move that stick to a different dimm slot. and try to boot again if the laptop boots it means one stick of ram was bad if not then switch out and test with the other stick keep trying until you have tried each dimm in each slot . Hope this helps