Not sure if this is the right place but hoping someone has seen this issue and can help

I have an ECS Q77 based machine that just wont start. Fans all spin but I get no video and 3 beeps.

Its this one - http://www.ecs.com.tw/ECSWebSite/Product/Product_Overview.aspx?DetailID=1457&CategoryID=1&DetailName=Feature&MenuID=24&LanID=0

Checking the AMI BIOS codes and manual it says the RAM is likely culprit. I swapped the RAM (tried 3 different pcs) and nothing .. just 3 beeps.

I had a basic G620 in there so thought I would try an I5-2400 from a working Asrock H71 machine but no luck.

I tried 2 different GPU and without any GPU and 2 different PSU (both GPU and PSU work fine with the Asrock system)

The 3 pcs of RAM and both CPU work 100% in the Asrock but the ECS simply beeps.

I had a look and the cpu pins seem OK but I'm no expert (even after watching the latest LTT on youtube on bent pins)

Anyone seen this .. got any suggestions .. is it dead :-(