monitor keeps going off

[consty]

Monitor keeps going off; thus bought a 2nd hand one off a trusted source, worked fine then a couple of days later the problem has returned. The monitor does come back on if you swith everything off at the mains & switch back on after a couple of minutes. This is irritating of course but worse is that if you leave computer unattended for a while the monitor turns off.
Any ideas?
Is this anything to do with screen resolution settings that I can adjust btw - if so how?

I dont know if this is co-incidental but a week before the first monitor started having this problem PC World put some more memory in the computer. It worked fine and as I say, for a whole week. Then the monitor got the problems...

Help anyone?

 

[Nottingham Fox]

Have you tried plugging it into the sofa ?

 

[Jeff]

Is it only turning itself off after you've not used the computer for a while, or does it turn itself off while you're using the computer?

 

[consty]

It always goes off when I plug it into the sofa, so I'll try elsewhere next time.
Jeff - generally it happens pretty much only when it is left unattended for about 10-15 minutes.
On one occasion, about 2 days ago it went out in mid-useage (causing the loss of the email my good lady was working on at the time) but pretty much the problem only happens when the computer is left alone for a few minutes.

 

[bocadillo]

It always goes off when I plug it into the sofa, so I'll try elsewhere next time.
Jeff - generally it happens pretty much only when it is left unattended for about 10-15 minutes.
On one occasion, about 2 days ago it went out in mid-useage (causing the loss of the email my good lady was working on at the time) but pretty much the problem only happens when the computer is left alone for a few minutes.

I can't understand why an email would be lost on the shutting down of the monitor. Can you not 're-awaken' the monitor without re-booting?

 

[Durham Fox]

Is the RAM dodgy that went in and powering the onboard GFX? sounds like a possibility.