I srsly hope you didn't mean the E8400 oneStill going to recommend a new PSU. You want a higher quality one anyway as that one is liable to blow and take out your system.
what if I put the old 430 back?You're going to want a new PSU regardless of what you get. It may seem pointless but having your system liable to blow and take out all of your components is more expensive than dropping money on a good PSU now that will last for years and be usable in other builds should you desire.
Leadtek 1GBWhat model brand was it?