I have had reaper evaluation version for like 50 days now... and in the last 10, it has started to clip.

The clipping occurs when I play back the music, and even when I just open the program.
The screen just flickers every now and then when I open the program.
I have tried turning all of the volumes (including master) down A LOT... but still nothing

Does anyone know how to fix this... because it is really annoying!