I've just recently decided to start reusing my PC (The monitor is a HP w2007v, the tower was hand built).
The problem I have is although the tower seems to fire up fine, making all the right noises and beeps etc, when the monitor lights up, it instantly says on the screen "monitor is going into sleep mode".
I've tried a different monitor I know definitely works and it's the same thing. I've tried another cable (the blue jobby with the screws on either side) and still the same.
Is there anything I can do to solve this?
I've no real recent experience with computers, but I'm a bit of a 'have a go guy'.