The heading or the middle display is not showing and  there is a warning saying "VD FAIL" I tried a bajillion buttons but its not working. help

That's probably YD Fail.

 

 

Your yaw dampener is probably not turned on, it's a YD button next to the autopilot switch up on the autopilot panel.

...just a guess, but I think corrupt download and/or install .  The YD FAIL is nothing more than a CAS Warning and very normal.  Try reinstall / run as Administrator, all Antivirus OFF, etc etc 

i cant press many buttons... and that includes the YD one

Would like to help you, but with the information provided, I think it best you place a trouble ticket with Carenado . :unknw:

Avionics have switched off.... press A.. Try this.