What is wrong with my computer monitor?

My computer monitor was working perfectly normal. Then one morning when I turn my computer on, the monitor did not turn on. The only sign of life the monitor has is the little green light next to the power button is blinking. Of course I tried reconnecting all the cables however there is no response. When I press the power button on the monitor it does not do anything either. When I unplug the VGA? cord normally the screen would say “No signal” but the screen stays black. Any Ideas?
btw my computer seems to load up normally.