No signal. Hi peeps. Wee problem when I installed some new(to me) parts to a new case .lt all worked on the bench. But when I installed parts into case, it wouldn't power on. Fiddled with power switch dupont cable (connected to wrong pin). Now it powers on gpu and other fans turn, but no signal to tv or monitor. Did notice that power supply spins for 10 15 secs then stops. Tried different hdmis