Hi,
Can you explain your problem that led you to believe you had a faulty motherboard in your first post,(was it this failure to post) or some other problems?
just noticed we have the same surname, haha same clan,
I think it should give something for sure, Is your PSU Ok
Can't think of anything else to help you mate I'm out of idea's
You got the paperwork from gigabyte of the testing done, drop them an email or give them a ring explaining the situation,
And see what they can reccomend,
Explain the screwdriver test to me, is it just shorting the power button pin outs your doing?
Cheers