We have Dell T1650 PCs with 2 nVidia graphic adapters / Windows 7 and 4 attached monitors.
At initial start all screens are blank, the computer does not show anything. If powered off by pressing the hardware power button and then restarting all monitors show a picture. The Windows event log shows only the errors, that the machine was shut down unexpectedly.
The last entry with blank screen seems to be that user specific dlls for every application are loaded.
How can I find out the real problem?
Problem with both answers The PSU question: Both cards are low voltage cards with together 40 Watt. The cards where choosen so that they fit for the PSU. Dell offered a more costly card which needed 60 Watt (and does not provide the needed 2560*1600 resolution), so it should be fine.
There is also no upgrade from Dell atm for the PC. Driver and bios are at latest revision.
And I still want to know if there is a way to have more feedback from the system if something is missing.
I also believe that the system does not fail to boot, but it is just showing nothing (all latest drivers)
The systems boot normally, if it is not to cold in the room.
Can anybody explain this behaviour?
If it is warm, everything seems to work well.
If it is cold (e.g. somebody opened a window to get fresh air, with -10° it gets soon quite cold) the other systems does not start up initially, the only display something with a second start.
For me it would be understandable: To hot -> system temperature to hot -> refuse to work to secure system.
But To cold -> ??? -> graphic adapter does not show anything
Can anybody explain the "???"-part?