Originally Posted by chewy

EIL I can't beleive I'm reading this as I had exactly the same problem just before Christmas with a 2 day old new PC !!!

We thought i was the monitor (TFT) and it wasn't, thought it was the graphics card wasn't it turned out to be the power supply and before you say it YES the lights were coming on, the PC was booting up but apparently the graphics card needs certain voltage and if it's slightly different the PC can swicth on boot up etc but if GC isn't get the right voltage it won't power the monmitor up strange I know but beleive me it cost me 50 quid to find this out and saved the whole PC being stripped again.

Got to be worth a try and sonuds uncanily like my fault.