Unknown problem

Hi everyone, I am new on this forum. I hope I can find some help on here.

This is my first computer that I built from scratch. I was actually taking my old comp from one tower to the next, but i decided to build a new one. This is what I got:

RaidMax 380 watt power supply
AMD Athlon 64 x2 4800
NCS motherboard with embedded Nvidia GeForce 6100
DDR2 800
New 250gb hard drive with no OS as of yet.

So I put everything together accoring to spec, and I actually had it running for a few hours the night I finished assembling it. (I was using my old hard drive with XP just to test it out).
That night I turned it off, and the next morning it would not boot. The power supply fan and CPU fan came on, but no activity to the hard drive or the cd drive. I would initally turn on the back power switch, then push the front power button to turn on the system. The red HD LED comes on, but not the green power light, I also cannot turn off the system with the front power button. No signal to the monitor, keyboard flashes, not the mouse. I've tried to reset the connection, CMOS, battery, even reset the CPU. Nothing is working! Is there not enough power? I even put my old system back together and the same scenario. Help please!

Carl

 

Do you have another psu? Have you made sure all cables are plugged in securely? Especially the one from the socket to the psu....had a dell that wouldn't turn on all the way cause the plug was almost all the way in.

 

Chek the memory,remove it and try 1 by 1...be sure your grafics are well pluged...try to make a boot on safe (press repetly f8)...sure the processor is tight and beeing cooled.