i plugged it in to an ibm thinkcenter i had before using the pc vga plug in on the tv and it worked just fine.. i since got a new computer and now the tv goes black and keeps telling me i need to change my pc screen resolution.. but ive tried them all and they dont work. my computer now is also an ibm. its a lenovo with a 1.89ghz dual core processor.. the tv is a 47" Sanyo.. i also tried to change the FPS from 60 to 75 and 85.. none work.. can anyone help??