I have a mini computer (specs found here http://www.jetway.com.tw/jw/Barebone_view.asp?proname=JBC600C99-52W-B%20(Mini-top
)&productid=760) I have had this setup for over a year now with hdmi audio and video to a receiver, then on to 2 projectors. It has worked (except when nvidia or windows updates something) great until about a week ago. It now works fine on boot up until you get to the Starting Windows message. After that message the screen would go back into standby mode. I figured it was another video update gone wrong, so I booted to safe mode and rolled back the driver. No luck. I took the computer to a regular monitor and plugged it in with hdmi. Same problem. I attached the monitor to the the dvi on the computer (using a dvi to vga adapter) and it boots up to windows fine. I then started the computer with hdmi connected, waited for the Starting Windows message to go away and the screen to go to standby, then switched back to the dvi port, and windows was loaded. So out of all that I gathered that the dvi port is working fine and the hdmi port only works until Windows loads.
Since then I have updated the graphics card with the latest driver from nvidia (v188.8.131.52), searched the BIOS for a setting to change (currently on AMI 080015 A02), I have tried to find a BIOS update (with no luck), tried to update the chipset (didn't seem to need an update according to intels automatic scan feature), and uninstall the video driver and allow windows to load its own driver.
I now ask for help with this thing because I don't know what to do next. I have not really been able to find a place with drivers for this machine. I don't know that a reinstall would fix anything, and I haven't tried since I can't find a good place for drivers and I don't have a Windows 7 Home Premium setup disk. Any ideas??