Brand New Gigabyte Z97-HD3P will not post or boot

[soarwitheagles]

Hi everyone and long time no see!

Been away for quite awhile...

Ok, purchased a brand new Gigabyte Z97-HD3P, left it sit on the shelf for about 18 months.  Had a ASRock MB die on me.  Running a 4770k in a dedicated security rig.

When the ASRock died, it took the 4770k with it.  So had to get a new 4770k.

Installed it in the Gigabyte Z97-HD3P, everything was fine.  Post, boot, start up, and worked well for all of one hour.  Went to check on it, dead as a door nail.  Will not post, will not boot.  Funny thing is, when I hit the power button, the MB lights up for 1-2 seconds, then shuts down...not sure what is going on.

Replaced a nice Seasonic with a brand new Corsair PSU, same problem.  Replaced the RAM, same problem.

Did a ticket with Gigabyte usa, not sure what else I can do.

Please give me some good suggestions if ya have some.

Best of all, please say hi if you were one of those very nice people we had great chats with a long time ago!

It is me,

Soar

[shadowsports]

If you are running the system with 1600Mhz Vengeance memory, I know its compatible. 
Replaced the PSU
MB Battery? (unlikely)
Disconnect power, remove MB batt, press and hold power button.  Reconnect, replace and retest

Try booting from back up BIOS using switches
 
Reseat everything
Have a look at the CPU socket for bent pins
Have you tried starting with only one stick of RAM? 
Remove your vid card and try with on-board vid
Remove all components except RAM & CPU, retest


The troubling issue here is that it ran for an hour.