Hello, I have a Gateway DX4831, which came with an i3-530. I bought an i7-870 in an attempt to upgrade. I upgraded the bios to the most recent version and put the chip in, but when I start it up it fails POST and gives 1 long and 2 short beeps, which seems to indicate a video problem.... Both chips are socket 1156, so I thought there would not be a problem. The motherboard is a Gateway H57M101, which has a H57 chipset. Before I bought the i7-870, I did some research and thought it would be compatible with the H57 chipset. This is the first CPU I have tried to replace, can anyone explain to a newbie what may be going wrong here? I greatly appreciate any assistance, thanks.