I just build a new system, brand new 520W 24 pin psu, check all my cables and reseated all componants, but when i power it up it will run 3-5 sec, then shut down, no post, only thing in is video card, memory and HD.
AsusP5GD2 MB
P4 3.4 775
ati x700 video card, seagate
300gig 7200.8 hd...