karasahin, switchable graphics is the feature that allows you to use an Intel® HD Graphics video controller and a third party video controller in the same system, which allows you to use each one of them depending on the tasks that you are doing in order to get the benefits from the technologies that each video controller has to offer
That had to use special drivers provided only from the system/computer manufacturer or Original Equipment Manufacturer in order to work.
As we have mentioned above, the newer versions of the generic Intel(R) video drivers (starting from version .3071) will work in systems that feature switchable graphics. However, an updated driver from the Original Equipment Manufacturer (Hewlett Packard* in your case) has to be used for the additional (third party) video controller. Unless this is done, there is guarantee that the Intel(R) generic drivers will work properly when using switchable graphics.
So, if you are not able to obtain an updated driver from your Original Equipment Manufacturer, then you may need to roll back to the previous versions that worked in your system to avoid this kind of conflicts.