Lately when I press the power button my case lights up and everything starts running inside, but the monitor fails to display any signal input. After several attempts I finally got it to boot, but this is starting to happen more and more frequently and it takes more tries each time to get it to boot up. When it does not work I can't even get the BIOS boot up screen, its as if the connection between the computer and the monitor is not there? I am doing some Orthos testing to try and isolate the RAM or the CPU, but what else could this be caused by? BTW, PC was completely Orthos 24h stable and video card was tested with 3DMArk05/06 for 12h straight. No problems over the last 2 years or so prior to the last week when this started happening.