Delay in booting up after pressing power button

If your laptop or pc or server shows a long delay in booting after pressing the power button, it's possible it could be underpowered.  I realized mine was 600W and after changing some green for non-green hard drives, the bootup after a cold start was taking longer and longer.  I purchased a new PSU of 750W and that resolved the issue though I never tested the 600W PSU if it was bad and took a few too many power surges.  Likely my motherboard was underpowered for the new hardware. 

Cheers,
TK