I tried to install RAM in the second slot of my dell inspiron 14 7000 series but the computer did not recognise it. I tried removing the other old RAM only leaving the new one which then the computer did not turn on at all keyboard too. I then removed that one and added the old one which worked turning on the keyboard but the screen still stayed black. I might of installed it incorrectly because I do not really know computers (I am a newbie) but what could be the issue?