Troubleshooting new build.

[Zohar78]

Just bought new parts to build new computer. here is the specs: BFG es 800w, Mobo Gigabyte GA-EP45-UD3P, Intel q8200, 4gb G. Skill, ati gigabyte 4670, samsung s223-f, WD 640gb AALS, Vista 64,
So i put it all together, fired it up, works, install vista 64, everything, then trying to install the network card drivers, so i can get online, it shuts off. Press the power button, the 6 power phase lights light up, the cpu fan power for 1/10 of a sec, all the other fans actually turn on and spuns, it shuts back off.
I pull/unplug everything except the cpu and fan, and still have the same problem nothing.. pulled the battery for 2min to reset the cmos.. nothing. any idea what it might be? Is there anything else to do???
Help please

 

[tiraides]

Have you tried ALL of the steps listed in the Troubleshooting sticky?

 

[Zohar78]

yes, ive followed the troubleshooting guide. pulled it out and did the poor boy desktop, it booted, i shut down, reinstalled the parts, weird thing is it worked for like 10 minutes. then bamm! it shut off, and started it not booting again. im leaning towards a bad mobo, because last night i couldnt install the drivers for the netcard and now it installed. I did the power supply jumper trick and the fan turned.