that is a dell Inspiron 1545 , Intel core 2 due, p8600, 2.40GHz, ram:2.00GB , 32-bit system type.What are your system specs? You probably don't have enough ram to run vista as it uses more memory just to run. To fix your screen resolution you most likely need to install the video driver. I would highly recommend going to XP or building a new machine if your system specs are old.