ok wait...you say on the first line that programs freeze when you open them...but then you say the system fails to boot..which happens? and which driver revs have you tried? Also is your Mobo AGP 2.0 compliant?
A similar thing happened to me with the GeForce 2mx 400. In my situation it was because of my power supply. When you open a program, your video card has to draw that screen, when it draws the screen it sucks up power. My 250 watt power supply could not handle the drain with all my other hardware and my system would crash every time.
Ep, glad to see you come back and tidy up...did want to ask a one day favor, I want to enhance my resume , was hoping you could make me administrator for a day, if so, take me right off since I won't be here to do anything, and don't know the slightest about the board, but it would be nice putting "served administrator osnn", if can do, THANKS