Desktop or Monitor Issue
Sometime the screen goes black and in the left upper corner a small rectangular window "DIGITAL" appears, then changes to "ANALOG" and then the regular screen comes on, but stays on for a few second and then blinks for a split second and keeps on blinking.
Also, at night after logging off (computer off, monitor off) the monitor comes on by itself and a rectangular sign with a message "Check the signal cable" appears and keeps floating on the dark screen, which lasts for a while. This process gets repeated until I touch the power button on the monitor. Would you know what it is? and if so can I fix it? (I pulled out and reconnected all cables in the house several times), do I need a new monitor? The computer is fine right?