Hi, thanks for the response...
I am aware of the necessity on some Gigabyte boards of the need to update the bios using a 32nm chip.. (sandy) in order for the board to support the 22nm Ivy Bridge chips....
Had to do it on a previous build..
I have tried the board with both types of chip and same result..
Would be a pretty poor bios if it didn't support either..
the other components have been tested live.. PSU's, Memory etc on two other machines.. a Gigabyte H61 build and an ASUS P8Z68 - V / GEN 3
The two 500W PSU's have been tested on the ASUS build with a Geforce 8800 GTS, 500gig Seagate sata iii drive, dvd and multiple fans...
They will definitely be sufficient to power the Z77 mobo, cpu and fan..
The memory is 4 GIG ddr3 1333 MHz and 8 GIG GSKILLS RIPJAWX..
The processors are Celeron 1.8ghz sandy, Pentium G860 3.0GHZ sandy and an i5 3550 Ivy...
This alarm sound like the warning if fan cuts out etc.. which isn't the case...
Or the CPU is unsuitable for the board.. vastly different FSB setting or something..
Again shouldn't be the case and the board will not post so I couldn't check anyway...
As I said all components are proven to be working perfectly..
I have one more power supply to try but really it's overkill... The only reason I keep trying is it's difficult to accept that another board which is allegedly brand new has turned up with a terminal illness...
4 out of 4 boards, in 4 weeks....
Oh I might as well try a new CMOS battery, for the sake of it, but if that was low/faulty it would only stop the board remembering bios settings and flash up with a warning during posting..
I do a lot of builds and I'm already sure this board is faulty...
Just don't want to accept it...
More delays and hassle...
Have seen a few threads now where these Z77 boards have had issues like this.. and it's been RMA all the way...
Still open to suggestions..
Thanks for your help..