Need help cant boot new build

[rumple9]

Hi got a gigabyte sniper M5 mobo yesterday and I5-4670k but it wont boot, and theres nothing on screen. Using ddr3 1600mhz ram.

All fans (case, gfx card, cpu) are powering up, dvd rom can be opened and closed and the mobo is lighting up, but no POST. The mobo led display is showing code 15 which means northbridge initialising.

Can anyone help please ?

[wazza300]

Re: Need help cant boot new build

try with just one ram stick installed in second slot from cpu socket to front of case

no hdd and no graphic card,use onboard graphics and try with vga/hdmi/dvi ports if you have them

can also leave motherboard battery out a good 30 minutes to clear the cmos and put back in and try

also make sure your cpu cooler isn't overtightened,try a quarter turn undone on each screw