Power On Problems

[Gemjack]

Having built the a PC, using ATX case 350 PS, Abit G7A MB it will not power
on. I have removed all the items from the M/B, tried with just the memory
and cooler, both sitted in the case and outside. Do you think I have a
faulty case/PS

 

[w_tom]

Start by breaking the problem down into component parts. To
verify integrity of a building, one starts with the
foundation. For a computer, that would be the power supply.
Two essential tools in computer work - a screwriver and a 3.5
digit multimeter. That meter is necessary to measure voltage
on the violet wire from power supply to motherboard.

Background and knowledge to discover 'reasons for failure'
is posted at:
http://tinyurl.com/ry03 and http://tinyurl.com/ry0e

Chart for measurements is in:
http://www.hardwaresite.net/faqpowersupply.html