Hi all,
 
I've just installed my GTX 460 from my other machine as a hold out until I can pickup a GTX 580 (x-mas hopefully). Anyway my problem is once I replace my 5870 with the GTX 460 the computer will not show any display; once or twice I got in ok after 3-6 restarts and everything was fine. I've tried re-seating the card, but that didn't seem to make an difference. I find it very strange that the card works fine in my other machine (ITX P55 based machine), but not in my main one. Any insight would be greatly appreciated.
 
Specs: Seasonic M12D 750W | Core i7 i920 |  Gigabyte X58 UD5 | eVGA GTX460 SC  | Corsair XMS3 PC3-12800 6GB | Intel 160GB G2 | RR3510 - Samsung F3 1TB in RAID 5 | Pioneer DVR 212D | 2 x 2408WFP

Nope ... just sits there and goes into windows (if I let it), but still even then shows nothing.

why don't you try RMA'ing the card.
if you're really sure it's the card then just RMA it.

Put the card in the 2nd PCIEX slot and boot into safe mode if you can.
 
Use Drive Sweeper to remove remnant ATI and NVIDEA drivers.
See if the machine will boot to full in the 2nd slot. If it does, shut down and put into the first slot. If the machines doesn't boot with the first, then reflash the bios.
 
I personally had a Bios corruption issue on a motherboard I was using and the card would not work in the first slot without a bunch of artifacts on the screen and such. I was able to utilize the method above to get the machine running perfect again.
Good Luck.

Silver Bullet

Tried the 2nd slot and did a bois update.

Did Driver Sweeper too, but that won't effect the card not displaying anything upon boot-up.

I put my 5870 back in and boots up no-problem. Also put the 460 back in my itx computer and boots no problem.

 
Try removing all but one memory module
Clear CMOS, unplug and let it sit...for a minute or more.
Reboot. 
If no boot, replace memory module with alternate and repeat.
 
Sounds like a memory address issue to me being that both cards are able to boot into other machines. 

@tyketto - I'm running Win7 x64 if that helps anyone... but at this point of this problem the OS makes no difference. The bios or something else isn't correctly detecting the gfx card. This is before the OS has anything to do with the system displaying information.
 
Keeping in mind also that my other machine (GA-H55N-USB3, i5 750, etc) doesn't have any issues running the card and never has since I built it about 3 months ago. It's also running W7 x64.

Did you try a different connection on back of card?maybe the dvi your using is faulty or something.Or even the cable isnt compatable with the card?

I'm not sure about the MOBO and whether it can support the 400 series card. I had a similar experience in the last couple days.  http://forums.evga.com/tm.aspx?m=702835 .
 
Not sure whether any of that will help you.
Edit: Also check to see whether the BIOS contains a "pallette snoop/autodetect setting" for the PCIe slots.
 
does the other MOBO have onboard sound? Does the problem MOBO?
 
Did you Do a fresh install with a 260.89 or later driver and select all the options for install. I had an issue with stability when I selectively chose to omit stuff as the OS puts them in your installed programs folder anyway.
 
Sorry, just throwing out things I've run into.

i have this same issue, ever since the 260.99 drivers i turn on my computer and there is no display ( bios ) till the computer reachs login screen. then no other issues.
 
Before 260.99 drivers i have not had this issue. in my sig is my specs.