why is my keil crash when try to pre-comlite my typing ?!

hey guys, my keil have began to crush a while typing when trying to pre-comlite my data.. exactly when im typing TX ( in order to type TX_temp ...) it freeze for a long time .. then a black screen and later it back to work at usual . i cannot keep work like this and have no clow we its ocurr like this for the firs time .. i do have strong computer

More questions in this forum