|The PCIe adapter is two 4-pin molex to one 6-pin PCIe. Pick any two 4-pin plugs to connect to & connect the 6-pin PCIe plug to the card. You never did post the make/model & wattage of your PSU or it's amperage specs, so we still don't know if your PSU is capable of handling a high end gaming card.|
"but no beeping anymore (Which indicates lack of power?)"
No, the lack of beeping means you finally got the card properly inserted into the PCIe x16 slot.
"I think I may need some sort of an adapter that plus into the graphics card and allows the monitor cable to be plugged into it"
What do you mean by that? where do you have the monitor connected if not to the card?? You may also have to go into the BIOS, disable the onboard video, return the shared RAM back to the system & change the Inital Display 1st setting to the graphics card.
Why isn't the friend that sold you the card helping you?