I recently purchased the same exact board on eBay. The seller provides a one year warranty with a positive eBay review and 90 days without, which seems like coercion of some kind, but I don't use eBay enough to bother looking through their rules.
Anyway, I'm having the exact same trouble and I have to wonder if the boards this company is selling are bad. I'm using a Q6600 and have 3 2GB sticks of PC2-5300, but I've only been installing one to try to get the system to boot. My video card is an MSI GTS 250, plugged into the top PCIe slot (there are four on this board, though only the top three have room for two-slot cards) and I've tried every possible configuration.
I now only have my CPU, one stick of RAM and my video card installed, all of which boot up fine in my old Socket 775 motherboard. It's only got two DDR2 slots and the ability to run dual channel died on me, so I'm trying to replace it with this board. As I said, all of the individual components are good since it all boots on that dying board, including all three sticks of RAM. However I get one long beep and one short beep on bootup with no video of any kind and no progress when I leave it running. This board has on-board power and CMOS reset buttons, so I've even pulled all of the front panel, audio, and USB header connections with no luck still. It's very aggravating!
I've sent three emails to the seller and got a reply to the first one, but that was when I mentioned having difficulty with the front panel header due to my case's odd connector labeling. He just now sent a response to my third email asking if I can visually check to make sure that none of the CPU sockets pins are bent. I did a quick check before installing everything since I know that this will cause issues, but I'm gonna do a closer inspection now. If I see any bent pins, I'll reply again, especially if straightening them fixes the issue - or if the seller replaces it under warranty.
Davorito, did you buy your motherboard from eBay user "upgrade.expert" at
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110639276581? That's where I got mine.