Zimaboard Videocard doesnt reactivate

Dont know why, but the screen stays black and the screen in standby after i switched it off for a while …
USB wakeup is activated in the bios, machine is running regularly, but no screenoutput…

any idea ?

no idea `?

Did the screen light up normally before? It is recommended to check whether the DP cable is working properly, especially if a Mini DP to DP adapter is used.