Thanks for joining the desktop community.
I understand you are experiencing HDMI issues. The monitor is not detected.
At this point, let's make sure you have updated BIOS on the computer:
File name: TCIBX10H.86A.0048.EB.EXE
Also, check some troubleshooting tips about HDMI issue here: Graphics Drivers — HDMI Technology FAQ
tried upgrading the flash. no luck. On my sony 40EX400 LCD full HD tv it shows the msg as unsupported signal. I am going through the FAQs but find it extremely hard to believe that you have to take so many twists and turns to get to it.
It should be just plug n play.
Thanks for the update.
Please make sure get the latest video drivers here:
Filter by operating system and try to install the driver when it finishes downloading, to verify that your system will accept it.