My problem is that my procesor amd a8-5545m locks its frequency at 51% even when there is nothing open, sometimes it will get to the normal speed of 1700ghz but if I open any game or program this problem happens again.
AMD processors vary the processor frequency based on load and internal processor temp. The energy savings functions lower the frequency and vcore voltage when the CPU is at idle. Your processor is a 19w unit so any video is basically full load for it. There may be an issue with the mobo or cooling of the processor? It would be worth contacting your laptop maker tech support.