Alx

I haven an alienware aurora alx with an i7 930 24 gbs of ram and i put a gtx1070 in it to test it and it wont turn on only the lights over the motherboard and hard drive cages turn on could it be a motherboard issue?

I just finished my new machine and everytime it has been off for a while and i power it on it goes past the bios screen windows starts to load then screen goes to no video signal at which point i hit the restart button and it boots fine and all is well. i think its the psu its an old crappy...