Computer screen stays black

[kurt1212]

I got a new graphics card today (GTS 450) and I slotted it in, when I start it up the screen stays black, however, if I leave it for 20 seconds or so I can hear the windows start up sound.. I know my screen isnt gone because I've connected it to my laptop and it works fine. I have the Blue and White cable plugged in my monitor and my computer and still nothing, thanks.

 

[SledgeDG]

Do you get any signs of "life" (like the BIOS Info screen etc)
If so it's probably a driver issue (did you remove the old drivers before the switch) ?

If not, there are IMHO only 5 possibilities:
#1 The card wasn't seated properly -- reseat it
#2 The card draws more power than your PSU can handle -- get a better PSU
#3 you forgot to connect the extra power cable --connect it
#4 you bend one or more pins in the video cable -- replace
#5 The card is defective -- RMA

-DG