I just bought GA-B75M-HD3 motherboard and put my Intel i3 on it. The pc is too slow and I wanted to try a different memory to see if that was an issue. It would not boot with any other memory other than the one which I used initially (2x4gb corsair). I have 2 spare memory kits. One is 2x4gb PNY and the other pair is 2x2gb corsair. If I try either of the one I just hear a click sound continuously and it wont even post. Also I have an Radeon HD6450 installed. If I remove that and use my motherboard HDMI the output wont work and it only works with the card. It was working initially and now it wont. Can someone help me pls?