For issues such as bad video cards, memory, etc., PCs use beep codes to signal what is wrong. They are actual beeps though (you have to count them), not just a sustained whine. Aside from that, a couple of caveats on memory upgrades. MOBO manufacturers specify in the board documentation what combinations of RAM sticks will work, and which slots to use if not using ALL. Also any specification for pairing or matching the sticks. That's what you need to suss out first - ensure your exact configuration, to include which sticks are in which slots, meets the specification in the manual.