Monitor keeps cutting out, have replaced many things and still happens

[quixoticduck]

Hi

My monitor keeps cutting out, usually when the computer is restarting or when I turn the monitor on. When I'm using the PC for long periods of time it's usually ok. It isn't the monitor itself at fault but the computer, as I've tried another monitor and the problem still occurs.

It isn't the graphics card as I've swapped the integrated card for a GeForce 450. It isn't the RAM as I've tried other RAM. It isn't the PSU as I've put in a new PSU which I know works fine. :| It isn't the OS as I've reinstalled Windows. It isn't the HDD as I've put in a different HDD.

Most of these things I was doing anyway, not as a solution to this problem but still it would be nice to fix.

>.<

Thanks for any help.

 

[quixoticduck]

Btw, not sure it matters but the monitor is not HDMI, but VGA plugged into a graphics card. It seems to work fine when plugged into a HDMI TV but sadly neither monitor I have has HDMI in and the TV I tested it on is not mine.

Does the fact HDMI works mean anything?

 

[quixoticduck]