Okay I have a hp 550-127c and I recently upgraded power supply to evga 500 watt and added gtx 750 ti. My question is when I installed the power supply the cord for the dvd drive is super small and doesn't fit any of the cords I have it is really small and only has 2 wires and comes directly from factory power supply. Do they make adapters for this? And secondly the temp is around 52 when hard gaming is that alright or do I need to get something like Arctic silver 5 or more fans. Sorry first computer I'm sorta building anyway