I could really do with some help with this.. I have a mac g5 1.8ghz and flat HD monitor. It is barely a year old. Recently when switched off or on sleep mode the computer starts up but the monitor remains black or the monitor starts as well with lots of lines. In the past restting the PRAM has done thwe trick but recently I've had to reset the PRAM half a dozen times before the monitor comes on. Now the problem is occurring every single time I wake my computer. The monitor light is on and I have checked that the cables are plugged in several times. I have also run anti virus software and there has been no problem found.
Has anyone got any ideas????