Right one of my computers is playing up on me and i cannot figure it out myself, whats happening is i can boot my computer up but not my monitor i can turn it on i get "power saving mode" and then it turns off again, i havn't done anything to make this happen it's just started doing it randomly, i've tryed my tower on another monitor and now when i've put the monitor back to the original tower the monitor's buggered and doing the same. any help fully appretiated