I have a friend who is building a computer with an ASUS P8Z68-V with an i7 CPU and 8GB of RAM and a EVGA 01G-P3-1373-AR along with a GeForce GTX 460. With all the comments plugged in, we power it up and all the fans turn on along with the lights, it powers on for about 3 sec. then all the fans and light turn off, then they turn on again. We get no BIOS on the screen even when using the VGA plug on the motherboard. Any suggestions would be helpful. Thanks.
ok.. take a test of your mobo follow what i say.
1.take out all of ram sticks then start your pc if you hear the "BEEP" sound continously then your mobo is ok.if you didn't hear any sound then you have dead mobo.
2.after that test insert all of the rams again.now remove the heatsink then start your pc and touch your finger with processor if it get hot quickly then your mobo is ok if not then mobo is dead.
Im having the same problem. Eventually mine stayed on but still reboots ramdonly. I didn't do anything to correct it. I pressed on the memok button, it cycled acouple of times and then stayed on. Try that.
Try and connect just what u need to power it on. PCI express, 8 pin and 24 pin and see if it stays on. Yes it wont detect a harddrive but just see it it stays on. If it does then it might be one of your harddrives. Check for any shorts somewhere.