Both monitors blank at startup, only when HDMI monitor connected g45/g43 chipset

[HDer]

Gateway DX4820-20c 6 months ago. Windows 7 Ultimate OS, 6G Ram. Has G45/43 intel graphics onboard chipset. VGA and HDMI output. HDMI configured as primary, VGA as secondary, extended setup. Updated all Intel drivers including video driver. HDMI monitor is Toshiba 40" TV - VGA monitor is FHX2300. This is what happens:

1) VGA monitor connected only - startup is fine, display works.

2) VGA and HDMI connected - both monitors blank

3) HDMI connected only - monitor blank

4) VGA monitor connected only - startup OK, then connect HDMI, then HDMI comes on, and both work fine.

This is the only way I can get both to work. Unplug HDMI, start with VGA, wait for bootup, then connect HDMI.

5) reconfigure VGA primary, HDMI secondary - same problem occurs.

Other computer system can bootup and display with HDMI monitor connected, but not this Gateway system...?

Thanks for any solutions/suggestions.

[BPopl]

Almost the identical issue here! Using the onboard VGA and HDMI on a Dell Inspiron 3000. This exact setup worked on the older system, upgraded system.....Black screen at boot! All the options have been gone through just like henryder,,,,now I am going to have get the client a video card to do it and it makes no sense!

[Jose_H_Intel1]

It may help clarifying if you get no video during POST, operating system boot, or both.

Do you get video at the moment the desktop is loaded?

It may be a good idea to update the BIOS.