Pc does not boot when i insert graphics card

[ganesh_ganna]

Hello,
I've P4,2.5gb ddr2 ram,320gb hard disc and nvidia 9400gt gfx card and 450w PSU.
I was working the same configuration from past 1 year but last week my pc suddenly turned off.
Then i removed all parts and re inserted then i got that wen i insert gfx card thn only it wont start. Can any one help me out?

 

[mosox]

Can you try with some other PSU?

 

[wolfram23]

Could be a bunch of things. Seems like a faulty PSU might be it. Although what exactly do you mean by won't boot? Do lights come one? Fans? HDD? Could be a burnt out graphics card and you're just not getting video.