Monitor Going Blank

[MrTorrent]

I have recently had a problem with my BenQ G2420HDBL 24" Monitor, every now and then it goes blank, then comes back on right away, sometimes it does it loads of times in quick succession and other times it only does it once. Also after it comes back on, sometimes, i see a few lines on the screen flicker then disappear.

I've had this monitor and system for about 18 months and this is the first time it has done it.

Any advice would be much appreciated.

 

[MrTorrent]

Have you got a other monitor to test your system with? Or maybe a other videocard? Some motherboard have onboard gpu wich you could try. Using other hardware is pretty much the only way to find the problem.

I can't test that out right now, but lets say i do try another monitor and it keeps doing it, does that mean i need a new GPU?