I have an LG LCD monitor (Flatron L192WS). I've been using it since 5 years, never had a problem but from yesterday onwards suddenly after 20-10 minutes of working, the LCD screen goes blank. When the screen is blank, the power LED on the monitor is still ON and the power and HDD LEDs of the CPU are also on. When I turn the monitor's power off and turn it back on, the screen appears and it could be seen that all the processing of the system works fine then it once again works for 15-20 minutes, sometimes even longer and again the screen goes blank.
Can anyone help me understand what could be the problem?
Also, could it be some sort of virus/malware or is it purely a hardware fault?