Screen blank at bootup
Posted on 2009-07-15
I have a brand new Dell Inspiron 546MT tower with a 23in S2309W monitor connected with the supplied digital cable to the installed 256MB ATI Radeon HD 3650 graphics card.
At boot up the usual post messages appear and it then goes into the startup sequence for Windows Vista Home Premium. At this point the screen goes blank and a message saying "Entering power-saving mode" appears. The machine continues to boot but the monitor does not come back on even when the machine has fully booted.
The first time this happened I had no idea of how to turn the PC off as there was no UI to guide me. I therefore powered down using the case button and when I started up again I allowed the OS to go into safe mode. In safe mode the monitor remained on and I could see everything clearly. However upon restarting with a normal startup, the monitor problem was still present.
I then used the, also supplied, analogue monitor cable connected to the analogue input of the monitor and used a digital to analogue adaptor to connect the other end to the ATI card's digital output. This time there were no problems booting and the monitor works fine.
So my question is. Where does the problem lie when trying to connect digitally? Is it the digital cable? Is it the digital input on the monitor or something else wrong with the monitor? Is it a problem with the ATI card? Should I send the monitor back to Dell?
Any assistance would be greatly appreciated.