So my PC only accepts one of the 4 ram sticks I have. At one point 2 of the sticks worked but they randomly stopped working. I ordered another ram stick and when I put it in in my PC it beeps. I made sure it was ddr3 ram because that's what it supports. The ram is brand new and I doubt that it doesn't work. Only the original 4gb ram stick works with the PC. I updated my bios to the newest version. I know the ram is seated properly. But in the bios it only shows the 4gb stick. I tried multiple different combinations of the ram slots. The 4gb works on both the slots no matter how many ram sticks or what order. But the other ram sticks don't work at all. please help