Quote Originally Posted by aux9o View Post
I just got home and I have to get up early so I got to goto bed I'll check it out tomorrow.

Ok I had the GTX280 in slot 2 when I started. I installed the 465 into the 1 slot tried to turn the computer on and monitor would not turn on so I removed the 280 and left the 465 in the 1 slot. computer booted up and worked. I turned it off reinstalled the 280 into slot 1 booted up but would not show the 280 card.

I have windows 7 32 bit
If both cards work, but won't work in a certain slot, you may have a bad slot, like what others said.

If that's not the issue, open your Nvidia control panel and make sure you activate multiple displays. Maybe someone else can give you better detail on this, but you need to make sure your desktop/screen is recognized by both cards...