Hi, I have a old MacBook(the white one). It started fine but I decided to install more RAM to 2G (Max, 2 1G sodimm ) after that it just wont start, when press on the power button ther is absolutely no response, the screen is black, I thought the memory is bad so I put the original 2x 512M memory back, still the same. I did all the PRAM reset SMC reset as Google suggested to no avail, I just cant figure out what could be wrong, any ideas?