I suddenly got a 'Check Signal Cable' after turning on my monitor. It was working this morning I checked the vga cable. Inserted it to another monitor and it worked I have a
Samsung S19A300B Radeon HD 4670 asus mobo and a pentium dual core e5300
i tried using other cables but it just displays "check signal cable" and 3 boxes with red green blue colors and a "Digital" just below it :|