I have just recently had a large black circle appear when I hover over a relationshp icon in my drawings. (see attached picture) I have an i7-2600 processor with 8.00 GB of RAM, Windows 7 professional 64 bit operating system and a NVIDIA Quadro 2000D video card. I am using SolidWorks Premium 2013 x64 Edition SP4.0. I have ran the SolidWorks RX and it says that my video card driver is up to date and that everything is working fine. Any ideas?