GA-Z77-DS3H - brand new - won't POST

[vstherock]

Hi,

two of my friends have bought new machines built around this board,

other parts: I7 3570k, aftermarket air cooler, 8gb ram (2x 4gb, patriot brand), PC #1 has 500w, PC #2 has 750w PSU's, midi tower, 1 sata drive/1 sata dvd drive each, PC #1 running radeon 4870 PC #2 with a Radeon 5870

both built at the same time and PC #1 boots fine and installed vista in around 12 mins, no problems whatsoever

PC #2 when powered on instantly starts beeping (single pitch short beeps, aprox 48-50 of them) then shuts down, waits around 5-8 secs and repeats this cycle until the power button is held for 4 secs or more

we stripped the machine to bare parts, removing gfx, trying memory sticks 1 at a time etc. until we had only the motherboard, CPU, cooler, PSU and power switch (and PC speaker) connected, all producing the same results

(unfortunately the owner of PC #1 had left at this time so we couldn't swap bits to test further) I cannot locate any info on what the beeps mean, only similar issue is what the person in this other thread (http://forum.giga-byte.co.uk/index.php/topic,9217.0.html) has experienced,

does anyone have any idea what's going on (other than the board/CPU being fried/broken)

Thanks

Paul

[Dark Mantis]

Hi and welcome.

Firstly a list of the make and model of your main components would be a help especially the PSU.

It would seem to be something very basic here that is causing your problem. I would suggest stripping everything down carefully and starting from scratch. Try building it up outside of the case like this:

Make sure that you observe anti-static precautions.

Lay some cardboard or use the motherboard box that is non-conductive on the worktop and remove the motherboard/CPU/heatsink/fan/buzzer/one stick of memory and PSU from the case and put it on the cardboard. Add the keyboard and now I know you haven't got any graphics but try and boot. The system should try and then fail emitting a series of beeps. Please post what sounds it makes.