This problem developed while I was working on a "no HD Audio" problem. Previously the system booted fine. All systems go except audio.
Power off while inspection audio cable connections. When I turned system on, fans come on, I think I hear the hard drive, reset light is on hard and a green light on a CD is on. Screen is dark.
I have repeated this with all IO except keyboard and mouse disconnected. No change.
I have measured the power supply outputs at unused connectors. All measure good except 3.3v which I cannot locate on a connector other than the one to the motherboard. Did not want to probe in the connector housing. Assume it is good also.
Is the 3.3 volts by any chance the power Good indicator.
Power off while inspection audio cable connections. When I turned system on, fans come on, I think I hear the hard drive, reset light is on hard and a green light on a CD is on. Screen is dark.
I have repeated this with all IO except keyboard and mouse disconnected. No change.
I have measured the power supply outputs at unused connectors. All measure good except 3.3v which I cannot locate on a connector other than the one to the motherboard. Did not want to probe in the connector housing. Assume it is good also.
Is the 3.3 volts by any chance the power Good indicator.