Why won't the monitor display anything?

Why my computer randomly wont display anything on the monitor when i turn it on?

• hi guys really need some help, i just really can't understand my desktop T_T. I been using this desktop for more than 5 years? i think.. .. well then whithin those years I always encountered, my desktop wont receive anything to display? even though the cpu is turn on and working, at first i thought the problem, is the monitor is not compatible. so i bought a new one but it does not solve the problem... by the way it happens hmm "estimate" once a month?... ....i always luckily fixed the problem by checking the cables, removing and cleaning the memory and videocard it works sometimes but when it does not solve my problem "it makes me annoyed" so the best way is to kick or shake the cpu and it always works.... grrr.... and now its broken again T_T it really wont display anything again and again!! i cleaned, kicked it!! try it on another monitor...etc. . then something comes into my mind.. that maybe the cause of this problem is the power supply 's not sufficient enough? what do you guys think??,,please help me,what is the problem with my com and how to fix it T_T... tnx a lot!!

• Answer:

  I don't think it's a power supply problem because your power supply on the computer does not power the monitor. If its one of the older computer systems that allows plugging the monitor into the back of the computer, try plugging the monitor directly into the wall socket. If it plugs into the wall, try a different VGA cable running to the monitor, or it could be a defective video card causing the problem. Try re-seatting the video card..I have also seen bad power cords going to the monitor. Cheers