New Build won't Boot

[PhantmShado]

Hello,

I just put together a new build with the following components:
CASE SILVERSTONE|450W SG05BB-450 R
MB BIOSTAR|TH61ITX+RCH H61 1155
CPU INTEL|CORE I3 2100 3.1G 3M R
SSD 40G|MUSHKIN MKNSSDCL40GB-DX RT
MEM 2Gx2|GSKILL F3-10666CL9D-4GBNS

But when I hit the power button, the cpu fan spins up for maybe 2 seconds (and the mobo lights come on as well as the peripheals in that time), and then it shuts down. What's really odd though is that on some of the times I hit the button (very rarely), it will actually let me get to bios or boot the flash drive I'm installing off of. However, I can only get so far in the flash drive before it shuts off.

At first I thought the stock heatsink was broken (I had had too much trouble getting it in) so I swapped in an unused stock heatsink in my closet. It did not help. I've also tried all combinations of my ram (including none) with the same result, as well as trying to boot without the ssd and pci card (ethernet) that I have in.

Any ideas that might fix this, or is my mobo shot (that's my guess)?


EDIT:
I have also tried booting it on the mobo box with the same result, as well as resetting cmos. I don't even get some boots working anymore.

 

[Dangman]

Reset CMOS?
Try a different mobo?

 

[PhantmShado]

Unplugged the power LED, it booted. Swapped the HD led into the power header, and it still booted. Guess I'm all solved. Thanks for looking.

 

[AP514]

Whaaa ??

You know the connectors on those case wires have a small karrot (triangle) on one side of the 2 connectors to let you know which is the ground wire...maybe you had it backwards..

usually the Power Led is 3 pins (only 2 used a space between) and the HD Activity Led is 2 pins (although the Power Switch is 2 pin)

You might want to recheck all your Front Panel connectors at MoBo again............you might have gotten 1 pin off throwing off the other connections