I have CMV 946D Monitor and i am trying to connect it to my laptop via DVI cable and it doesn't work. my laptop is already connect to another monitor using VGA cable. do i need any driver or does DVI option is not good for monitor.

I got 2 seconds desktop screen and then black. power is still on

If you are getting a message that says something like "Check cables" " no signal detected" or something like that, it is likely that your monitor is operating correctly. I would suggest checking your cables, make sure that the computer is turned on, and if that doesn't help, check if your monitor has VGA, DVI, or HDMI inputs. I am thinking that your monitor may be trying to display from the wrong source. This is what a VGA (analog) cable looks like. VGA cables are typically blue.

Another common connection that is used is a digital HDMI (left) or DVI (right) connection. DVI cables often have white end connectors. How your PC connects to your monitor will determine the source mode you want to use on your monitor. (Obviously this is the cable view but the connection on the monitor itself will look similar.)

If none of these tips helps, I would suggest hooking the same monitor up to a different PC or laptop, and trying once again to get a the display working. Again, make sure that the connection matches the source setting on your monitor. If it works on another PC, then your computer may have a video problem.
Otherwise, if it still does not work your monitor have a problem displaying via that connection. If possible I would suggest switching to a different type of cable and re-try the above steps.

here is the simple test to detect hardware malfunction.
on every monitor these days whether its CRT or LCD already programmed inside self test.
detach your cable data to CPU and power on your monitor. if its displayed self test on your screen mean its OK and something wrong with your CPU, could be VGA error.

if its just black display mean some is wrong with your monitor.

if you post more detail maybe we in FIXYA could help.
thanks.

you have to play around with the color, black and white settings. Google it for a more exact answer

Try a monitor that has a vga output only, sometimes these laptops can't recognize the difference when there is a converter involved. It doesn't see the signal properly.

Try that and if a regular monitor works with vga then you know that monitor may not be compatible with that laptop because of the converter. You could also try another converter as well to see if that fixes the problem.

Temporarily, set your LCD screen-resolution to 800 by 600 by 60 Hertz.

The video on a laptop has three settings:
* output only to internal LCD screen
* output only to external monitor
* output to both

Toggle the control through the above settings, to find if any works.

If so, change the screen-resolution to 1024-by-768, and try again. Try again with 1280-by-1024.

there should be a menue in the screen just press the menu button.

If you want to use your TV as an external monitor, you have to connect them via VGA (top) or DVI (bottom) cable.
Which connections does your Philips monitor have?

I know this sounds obvious but- I had the same problem, and turns out the cord want plugged in quite properly at the back of the monitor. This may not fix every problem, but, I suggest you check the cord pligged in at the back of the monitor is firmly in there and restart, then if you still get the problem, contact the company.