I'm New too the site So hello everyone n.n... anyways cut right too it... i recently purchesed a Gateway Dx4860-ur31p and it worked right out the box. I found out that the PSU only had one molex cable, so i couldnt install the video card i purchesed for the pc.... today i got a Dynex 520 Watt PSu and i got home and replaced it. when i got the cables in place and grounded, all fans worked but my Power button led and no video image would occur... no beeping either... ive already tried taking out the ram... reseting the Cmos and putting original PSu back in and it still wont work... Just my luck lol can someone help me please