I have my dell inspiron N4110 with i3 core. My hard drive need replacement and since the laptop is out of warranty, i buy a new one which is a TOSHIBA 350 gb (more or less, i cant really remember). Since then, the laptop suffers from bad performance, i can't even play Warcraft III with lowest graphic settings. I cant even watch a movie without having a lag. So to sum up, the problem is with my display, my drivers are all updated. What can i do?