Originally Posted by moviegeek
Does your videocard support HDCP?
HDMI is digital so your TV requires HDCP while VGA doesn't.
No, HDCP doesn't work that way. Only the source requires HDCP, if the source doesn't require it then the TV will work fine with out it.
If the video card doesn't support HDCP you'll only get a problem when trying to play protected content on the PC that requires HDCP. The video player application will simply refuse to play such content.
As you've figured out already, 00firebird, the problem is very unlikely to be related to HDCP. As a simple test, try rebooting your PC with the TV being the *only* thing connected to the video card and only through a single cable. Remove your old "DVI to VGA" cable if its still connected and if you have a regular PC monitor or another TV attached to your PC, disconnect it as well.
If when you reboot the PC with only the TV connected, you can then see all the normal BIOS boot screens on the TV as well Windows when it finally boots up then the probably ran into one of the following problems:
- The TV, intedned to be a primary display, was assigned by Windows to be secondary display and disabled.
- The TV, intended to be second display, wasn't enabled in Windows.
- The TV was enabled as a display, but configured to use a resolution that the TV doesn't support.
- You had more than two displays connected to your video card at one time. Even if your video card has more than two connectors on the back it can only drive at most two of them at the same time. (DisplayPort is a possible exception.)
If it's first problem, then leaving the TV as the only thing connected should solve the problem.
If it's the second or third problem then it can be solved by reconfiguring Windows. Reconnect the display you intend to use as the primary monitor and reboot. If you're using Windows 7, right click on the desktop background and select Screen Resolution from the menu. On line marked "Multiple Displays" choose "Extend these displays" (if necessary). On line the marked "Display" choose "LG TV" or whatever appears to be your TV. It may be number 1 or 2 on the list. Then (if necessary) change the resolution to "1920x1080".
If it's the last problem then the simple solution is to only connect two displays at once. Otherwise you can use the Screen Resolution control panel described above to select which two displays you want to the video card to use.
If when you reboot the PC with only the TV connected you see the BIOS start up screens but nothing when Windows starts then it may be that Windows is trying to use a resolution that the TV doesn't support over HDMI. Try booting Windows in safe mode and see if that works.
If you can't even see the boot screens on your TV then it's probably a broken cable or something else hardware related.