Hello,i wanted to add another 4gb ram to my pc so i bought an used 4gb and it seemed ok,but when i installed it and turned my pc i didnt get any display at all ,so i wanted to check if everything was and when i opened the case i could smell burnt plastic where the ram slots are and decided to remove the ram i just installed (there was 4gb which i didnt touch) and still no display.I removed all the parts and inserted old ones that i know they work,still the same.I presume mobo got fried?