Project Reality Forums

Here is the mystery I must solve :
While I was rebuilding my old computer, I put in a 9500gt into a pc that has a 420w power supply. The 9500gt only requires 300w or 350 w power supply. But when I try to turn on my pc, it just shuts down after 0.4 seconds. When I take off the 9500gt and just turn it on, the computer turns on successfully and stays on normally.
I used to use the 9500gt with a 500w power supply. But when I try to use it with a 420w power supply, my pc will just shut down in 0.4 seconds -.-"

Anyone got any solutions for my problem ?
Anything will be appreciated

Thanks

Oh btw the 420w power supply used to run my 9800gt but trying to run a 9500gt won't work ...

This is a much more appropriate section.

Have you tried popping in the 9800 in as a test?

Have you got any other gfx cards to test with? It could easily be a fault with the card rather than the PSU imo.

He says he used to run the 9800 with his 420w. Are there any differences with other components since changing from 9800 to 9500?

Ok, I tried running the 9500gt with a pc that has a 750w power supply and computer shuts down 0.4 seconds.
So I guess its the GPU that is too blame

Anyways thanks for the help, I will go sad face now...

How long have you had it? Is it still under warranty?

Put another friend's card in the slot to see if you have a slot/mobo problem. GPU failure can result in quick shutdowns, but often its a power-circuit related issue. If another card doesn't solve your issue you are looking at a mobo.
Don't forget though PSU's can degrade in the ammount of power they can supply if they are very old, so if you are on the borderline when you buy a PSU, in 5 years you can be a few % degraded.