What could be causing inoperative magnifying glass, which activates the G?
Magnifying glass used to zoom in the specified area will not work, if the option is enabled Use software OpenGL Options in the system > Efficiency.
OpenGL Program is responsible for the graphics rendering using only software, does not use hardware acceleration graphics card. This situation applies particularly weak computers (most with integrated graphics).
It may happen, that a computer equipped with a strong card dedicated to CAD, also will not use hardware acceleration. The reason most are outdated video drivers or lack thereof. This situation can happen when you update your operating system.
attention. remember, that OpenGL Program you can turn at any time, but They must be closed all documents sOlidwOrks, Of course the program itself must already be running. Conversely, if the graphics card does not support hardware acceleration, OpenGL Program you can not turn off!