With new graphics driver version (Win7_64_15265.exe), it isn't possible any more to connect 2 displays (one per HDMI and one per VGA). Both screen onyl display "windows loading" dialog and where went to black wenn windows loading (Win7 x64, SP1) is completed.
When disconnect second montor (connected by VGA), and reboot windows the first screen works again.
Older driver (Win7Vista_64_152252 (126.96.36.199.2559)) works with both screen attached?
Can you confirm this? I want to updat to new version of driver because current version have some bugs that some windows messags (WM_SIZE) ar not handled correct (embedded panels of some applications where not be correctly resized when resize main window of application).
Driver version (188.8.131.5256) for Windows 7* 64-bits (15265) is a generic graphics driver, if it is not working properly with your system, I recommend you using the driver released by your OEM manufacturer (e.g Asus, MSI), these drivers have been customized according your system specifications.