Please try updating the drivers to the latest version. Here you have the download link:
If you find problems during the installation try these steps:
It is also important to use straight connections and as much as possible do not use video adapters or convertors.
2. Re: 3 DisplayPort (DP 1.2) - Cannot activate more than two monitors - third monitor goes into power saving mode, even after switching cables around.
Updated with latest firmware to no avail. HD Graphics Control Panel does not allow extended desktop across three screens.t. As you can see below, it recognizes all three individually but only allows two to be Extended Desktop. Is there an updated Control Panel available?