display problems

hi im having a problem with my display on my computer, the computer starts up normaly but when it goes to load the password screen the monitor comes up no signal and goes blank but i hear vista continue to load up. My hd tv is also connected via dvi to the graphics card and when i put the tv to the av channel windows comes up on it. i continue to load windows and then go to the nvidia control panel and go to set up multiple displays where my tv is shown as the primary display, when i click the dropdown menu my monitor is there but when click it as the primary display nothing happens i would be really gratefull if someone can help me out as its really doing my head in!

 

Did you try this: Go to Control Panel\Personalization\Display Settings after look at the picture for how to setup. (Try to make your first-PC monitor is main monitor. Click on number 2, set it to low resolution like 640x480. This will fix your problem.)

 

When i go into the display settings my tv is set to number 1 and my monitor as a small grey number 2, it won't let me change the monitor to number 1 so im still stuck?

 

my graphics card is a bfg geforce 8800 gts and my tv is connected to one dvi and my monitor to the other dvi, i havent had no troubles with this setup until one day when this problem just started to happen so i am confused?

 

I have same connection like yours. I have 19" LCD monitor and LG LCD TV. I used NVidia Control Panel (Version 1.5.2400.10) for set up. Here is a picture for setup.