2009 macbook won't charge? Time resets, wifi disconnects

I have a 2009 white macbook version 10.6.8 with a 2.4 GHz Inter Core 2 Duo with 2GB 1067 MHz DDR3 memory. Recently, when I try to plug in my charger in, the little light doesn't light up and my laptop doesn't recognize that it's plugged in- it doesn't even say Not Charging. I know for a fact it's not the outlet. It works every 60 or 70 times I plug the charger into the laptop. Also, sometimes it just shuts off randomly and when I turn it back on the date resets to some time in 2001 (when I open the date and time settings it changes it back to normal). Upon turning it on the wifi also disconnects. Help!!

Thanks in advance for your help 

View the original article here