Ok, i have used 3 computer monitors. And let me explain how each worked.

 

I change from a big monitor (with big behind if you get what i mean), a HP monitor, to two flatscreen ones. The first flatscreen worked from time to time, but often the monitor would go black.

 

For example, i would be on Runescape, when all of sudden screen goes black (and it would stay black). I found out soon that turning monitor off by pressing the "OFF/ON" button, and pressing it again to turn monitor on worked. The screen came back, but it was a temporary solution. Because often this plan failed, and the second i turned on the monitor and the picture came back, it would then go black again. This is for flatscreen monitor A. Sometimes it would work, but at end the screen went black to much. So i changed back to the big HP monitor which works but has a heavy load.

 

I didn't know we also had another flatscreen monitor. Let's call this one flatscreen monitor B. Monitor flatscreen B started to get a similar problem as flatscreen A. Instead of the screen going black, it blinks. Like half second its black, half second the picture shows, half second its black, half second the picture shows and so on.

 

My brother says that it may be because of the monitor cable, cable is originally the HP monitors. I really do not want to buy a cable, but if it¨s the cablesfault i will.

Its gotta be the cable playing up, if its that old its probably not properly compatible with the newer monitors.

A lot of cables stay looking the same but change a bit inside and thus can have compatibility issues.

 

Only other option would be crummy older graphics card that is not compatible with the newer monitor demands

Its gotta be the cable playing up, if its that old its probably not properly compatible with the newer monitors.

A lot of cables stay looking the same but change a bit inside and thus can have compatibility issues.

 

Only other option would be crummy older graphics card that is not compatible with the newer monitor demands

On scale of 1-10, what number would you say it¨s the cable that¨s problem, or graphic cards?

 

My computer is pretty new, so it SHOULD not be the card. Just putting that out there, not stating it as a fact.

Well judging by your info sounds like the cable is oooooollllld so I'd say cable is more likely the iss. In any case it'd be my first step since you can get a new cable for like nothing.

It sounds like the cable because properly installed graphics cards normally either work perfectly fine or not at all, whereas cables normally fail intermittently when they go. Cables are cheap anyway, I've personally ended up with loads of spares in the attic.

Ok, great. Thanks for help guys!