ASUS P8H67-I New Build--Won't Start

[PJNeary]

OK, so the oldest problem in the book... Based on the SFF Guide from May here, I decided to build an HTPC using similar Intel components, only using the ASUS P8H67-I DELUXE mobo rather than the P8H61-I. I got the Antec ISK-300-65 case and the i3 2100T CPU along with a bunch of other gear, assembled most of it, and... no power on. Double-checked all the cabling, tried re-seating RAM, removing RAM, tried to start by shorting the power ON pins, took mobo from the case and breadboarded it--all the Usual Suspects. I did the whole project using a grounding strap with a plastic cover on a hard table--followed protocol. Pretty sure I did the CPU and HSF correctly as well. (Yes, plugged in the CPU and case fans.)

The LED on the board shows there IS power coming to the board. I used an ATX PS tester and the light indicates the power from the Antec is OK. I've started the RMA process on the mobo (God, I'm really beginning to hate mobos). But it's gonna be a real problem because this is one of the few mobos that uses SO-DIMMs, so most of the other ITX's are N/A to me now, and I really like the extras on this ASUS. And the seller is out of stock to replace.

I'm really out of ideas other than a bad mobo, but I'm very gun-shy here. Is it possible that the Antec's 65W is not enough to POST this H67 board? (I've got no disks on it yet.) The user manual says use a 350W PS, but so does the one for the P8H61-I, so I'm doubtful. Any suggestions would be appreciated.

--Paul

 

[Puppies04]

I wouldn't have thought that mobo would draw any more than 20 watts tbh but I am not familiar with those power suppplies so I can't really comment on whether they are actually capable of putting out the full 65w they are rated at. Do you have another PSU lying around you could check the board with? Seems a waste to RMA the board when it might not be the problem.

 

[PJNeary]

Thanks for the reply. Even tho it was not the root of the problem, I did dig out a power supply from a retired desktop and started playing. Once in there again, I removed the case fan connector, and Voila! the thing booted. Same thing with the PS on the Antec case. So some more thoughts and fiddling revealed that I had done a very dumb thing. The power cable from the fan had a molex plug, so I had connected that up from the PS cable which had two molex's and one small plug. BUT--I then proceeded to plug the small plug into board, not realizing that that was also a power source (I think). Tried to dig out an adapter, but it would not turn on the fan, so I've just left the cable from the PS connected, and so the board cannot regulate the fan speed. No biggie for now. Will try to clear up later perhaps.

Thanks again for the suggestion--it put me on the right track, and gave me a reason to take another crack at it.