blinking of monitor

[sukesh1090]

guys i am having LG Flatron W1943C monitor and i am using windows 7.from few days my monitor blinks, that is if i am running games or browser or anything,the wallpaper which i have,comes and goes within a fraction of second it will be at the speed of blinking of eyes.it won't happen regularly and some times it won't come at all it happens very very rarely.so guys is it the problem of os or my monitor.
for me the culprit seems to be the os.what you guys say????thank you.