hi everyone,

this is an excellent forum with some well clued up members, a real wealth of information but something i cant find an answer to is a problem im having. im building two 4 x r9 290 rigs and im having some difficulty. im getting no signal to my screen, not just black screen but no signal and on start up one long beep fallowed by 3 short beeps (gigabyte beep bios say faulty keyboard but im sure my keyboards good...) hdd led flashes 1 long fallowed by 2 short flashes about 20 seconds after start up. cpu fans spin and r9 290 fan spins. i have a hdmi from gpu to screen, i have double and triple checked connections, tried switching all 4 x 4gb ram in different slots one at a time two at a time and tried switching gpu slots and tried all 8 gpus. i removed the cmos battery over night and also shorted the cmos jumpers to reset bios but still no signal. im not sure if the rig is reaching bios because i have no signal on screen (just a box saying no signal). i think im starting to go insane... lol

gigabyte ga-990fxa-ud3 motherboard x 2
Kingston 4gb ddr3 1600 ram x 4
ocz gold power supply 1000w x 4
r9 290 sapphire x 5, r9 290 gigabyte x 3
amd sempron 140 and 145 cpu (one of each)
raiser cables x 8

will gpu display graphics without drivers being installed?

this is my first build so im a bit of a newbie but i used anti static wrist strap and have made a frame mdf board and 18x40 timber which holds the rig, if anyone can please help me solve this problem i will show my appreciation by sending some litecoins your way

regards